The second fact is that they're doing it on purpose, they intentionally emphasise QOL changes and noticeable improvements so as to artificially extend gametime and enhance performance metrics without actually having to create new content but rather just making existing content take more.
It's not just classes, it's everything. Gotta make that new healthier part with all the new peace bloom and the brand new vial. What's it gonna seem like? Oh it is a red bottle with a gold shit onto it or something.