It's not super new, no. I thought of it as a 10-ish year old term, but turns out it dates back to the 90s: https://www.merriam-webster.com/dictionary/folx#word-history

I personally think it's silly since "folks" is totally non-constraining, but it's also a fine and clear term so I don't see a need to get upset if people want to use it. It's not something heinous like referencing standing ON line or other nonsense.

A wolf spider is a type of spider that "are robust and agile hunters with excellent eyesight" and apparently also have vision behind them.

https://en.wikipedia.org/wiki/Wolf_spider#