The main issues I see with this are many things.
As you said, new agers and xtians will try to take our information and try to either
A.Practice magick on their own like they are some type of fairytale wizard
B.Bring the wrong attention to our forums and whatnot. Let us not forget the censorship TikTok has.
C.Chinese Spyware
Obviously it is easy to get "famous" on TikTok for being a degenerate dumbass who has no purpose in life but to be a circus clown. I wish the app was banned by Trump when he said he would. However, that was subverted by Bill Gates as a power move for him and Microsoft.
We Zevism could easily trend on TikTok for bad or good reasons.
There are also people that actually believe every "TikToker" is rich from views or followers. This is simply misconstrued. If you make any good money from there, it is due to the sponsorships and slave contracts companies pay you for advertising their product as an "influencer". Notice how many could have millions of followers or views on TikTok but they are still known as an average joe on every other social media platform.
I could make a dumb video pissing off some NPC and go "trending" on TikTok for calling them a "Karen". This isn't the worst idea in the world but just be careful, and mindful of what could happen.