I'm certain these are advertorials masquerading as personal opinions. These people are being paid to promote the product, either through outright cash, credits on their platform or just swag.
I added a "disclosures" section to my own site recently, in case you're interested: https://simonwillison.net/about/#disclosures
To be fair, change is not always good. We still haven't fixed fitness/obesity issues caused (partly) by the invention of the car, 150 years later. I think there's a decent chance LLMs will have the same effect on the brain.