Two scenarios.
1-Let's assume in 5 years, for some reason the quality of AI images hasn't improved that much when compared to the best humans at their craft.
Even if AI is seen as a lower-quality work producer, today AI is already capable of replacing most artists. So even if people still request services from humans it will be way less than before, meaning a significant number of artists will be jobless. Only those who can capture details better than AI will still be hired to do work. With this, you can already see that only a small percentage of artists will be able to make a living out of it.
Also, there is another thing you are missing, and it's called the art of promoting. This is already going on in some companies, people study AI, and its outputs to certain words, in order to understand how it works and give it better prompts, this can potentially become a new field of study, and people might request help from the best prompters to generate extremely good (very specific/detailed images) images from the AI. The field of prompting could potentially wipe out all the artists because we do not know how precise an AI can get with the right prompts.
I'm not saying all of this has to necessarily happen, but you can see that even if AI does not improve your field has many ways of losing most of its professionals.
That being said, I do not think that a scenario where AI work is seen as low quality will happen. That takes us to scenario 2, which is the most likely one.
2-For the past year the progress in AI improvement has been going so fast, that experts can't even keep up with the breakthroughs. We are likely about to enter a new era. I've witnessed this myself in this sub, in the beginning of the year there were only breakthroughs (different breakthroughs related to AI) once in 1-2 weeks. Now is every fucking 3-6 hours. I think it would be a miracle if text-to-image AI doesn't improve. By the current progress, in less than 2 years, it's likely to have surpassed humans capabilities in almost all artistic ways, at that time, the need for artists will start to decrease, slowly at the beginning, but by the 2030s, being an artist will just be a hobby (for 99%of people) not a professional field, or it might become like a sport, like chess where despite machines being better, people still want to see humans play.
Please pay attention to the breakthroughs, maybe in some weeks, we will be hearing something new about this text-to-image AI. People need to start taking this seriously and plan their future accordingly.

I think you lack perspective, I agree that words cannot describe an image 100% accurately due to them being abstractions of reality, leaving many possibilities to be interpreted from them. But, outside the creative professional field, most people, when thinking about something in their heads don't have a clear image of what they want or don't have an idea.
Text-to-image (or video) AI, will be very valuable, for the average population. And not only that, today as I speak they can generate thousands of images from one prompt, which allows one to pick his/her preferred ones. They will likely continue to get better and generate better images and videos that will suit the user the most, based on collected data about them. Looking at the current pace of development in these fields, they will likely find better ways to improve human-to-AI communication, and AI IQ is also increasing every 2-3 months. 2 years ago some artists said that the AI couldn't even generate an image that followed the instructions in the prompts.
The reality is that because there is a small percentage of people in the world who can think of very detailed images in their heads (especially in the creative field), which AI cannot reproduce at the moment, that won't stop the other 90%< of the world from enjoying this beautiful tech. Another thing you fail to realize buddy, humans to humans cannot transfer information with 100% accuracy because guess what... we also use words. So you tell me if the average person has to request a painting, what service will he/she request or buy; a human who will take days or hours to paint something and who cannot fully comprehend the meaning behind the words of the requester, or buy an AI software which can generate thousands of images with high resolution within seconds but which for the moment cannot fully comprehend the meaning behind the user prompt? You know the answer... Also, AI will be cheaper in the long run, than requesting services from humans. Think about companies, they could literally get save a lot of money and time with just a program that generates campaign images and other stuff for them in seconds instead of a team of humans.
The future (a near one) looks bad for your field.
By the way sorry for my English, I'm not a native.