I guess it depends on what you consider a "decent amount". Within the overall context of whether text posts would be popular or not on TikTok, 5-10% of globally-trending posts being text-heavy seemed like a decent amount to me but YMMV.

But, you are right that I was talking about text posts in general rather than directly responding to the videos about reading text from reddit/twitter that this subthread was discussing though. I see those often but I don't see them currently trending.