Don't mistake "bad for people like us" with "bad for business" — Duolingo appears to be doing fantastically well as a corporation despite having deliberately made themselves into something I found painful to use and therefore stopped using. Facebook is rolling in money despite being your example of bad. Tabloid newspapers sell very well.

Then again, TikTok seems more popular by the day across most groups of people I interact with - technical and non-technical millennials and boomers all use it very extensively in my group of friends and acquaintances.