It's not that there's no harm in it, it's that you don't see the harm because it's obscured.

Ah yes, someone who posts 3 videos a day with titles giving "San Andreas fault updates" surely isn't a grifter. He is not qualified in any sense of the word. Every single earthquake charlatan uses sources like the USGS to give them a scrap of credibility.

Please do not fall for "earthquake prediction" quacks. Check out r/Earthquakes if you want real, qualified answers to questions and discussion that isn't based on pseudoscience. Channels like "Earth Master" are charlatans.