i actually sort of remember this as it's when i briefly used tiktok. i'm going to preface this by saying that i'm working with my own recollections, and it's very possible i'm misremembering or missing things. bear with me, please (and apologies if i seem like i'm incoherently rambling

)!
i had some friends who were pretty into creating videos on musical.ly back in the day but were no longer into it by the time tiktok came around. a lot of the stuff from early tiktok usually found its way onto some cringe compilation rather easily (this still happens ofc, but i feel it was a lot more frequent then.... or i personally just don't see as much of it anymore). things like the "i'm already tracer" song were
everywhere; this all happened while i was still in high school and hearing people i knew reference that song despite them not even really knowing much or anything at all about overwatch felt surreal! in an attempt to simplify my thoughts on early tiktok (so 2018/2019ish), a lot of the content on there felt quite similar to stuff you'd see on instagram around that time as well as 2016 youtube. this includes both the people who spent their time just making fun of others, but also stuff like starter pack memes and cosplays, etc. but if i'm being honest, i think most of what i saw from the app outside of whatever was on my for you page was, more often than not, videos made by queer kids being put in tiktok cringe compilations on youtube because of their identity
it's really weird to see how quickly the nature of the app shifted, too, with all the overnight fame and number of "rising stars" on there. back then, i knew who at least a few of them were in passing but nowadays i couldn't tell you if they're still relevant! lol

i also find it really concerning how it became the new "town square" so to speak given how misinformation and propaganda are rampant (same with twitter), but i digress...best suited for another topic, probably.
Im pretty sure Musical.ly was bought by Tiktok after it flopped so Musical.ly's videos moved to Tiktok. The gamer vs. furry war thing was 1-2 years after that happened. I dunno how "cringe" musically was considered, it had its own environment for a while, sorta like vine but different in a way.
yep, bytedance bought musical.ly sometime in 2017 and then merged everything into tiktok within a year, if memory serves. musical.ly was considered to be pretty cringe then (i saw
a lot of musical.ly kids end up in cringe compilations or in videos made by people like leafy), and as far as i know it's still kind of considered to be cringe by some but has mostly faded into the background.