We don't have TikTok here (India), but I find YouTube shorts pretty useful. My feed is a mix of Action Labs shorts, Omar Agamy news, ZTT PC stuff, psychology, videos about animals (pet, domestic, wild), etc. I don't know what your standard for meaningful is, but the shorts are at least as useful as long form videos to me, if not more.

An important bit of context is that I prefer to get detailed information through text, research, sometimes podcasts, but rarely ever videos. The shorts serve as one low effort way (among others) for me to surface new potentially interesting things, to follow up on to the degree I find useful or interesting.