As much as I personally dislike TikTok, I don't think it is fair to it: cultural willingness for more sensor sheep on Internet started years before TikTok's popularity in the west.

It's not the sole cause, but I believe it's the main driver behind a bunch of specific substitutions that are mainstream now or nearly so. For example, dih, ahh, and unalive. They may not have been invented on tiktok, but that's where they incubated.