Wasn't TikTok known for becoming viral by having tons and tons and tons of fake upvotes for everything to make everyone think TikTok was a better place to post content [1] [2] [3] [4] [5]?
Facebook and Instagram had the same "problems", they just addressed it much earlier than TikTok.
I would imagine they have already tested fake likes to maximize how believable the like ratio can be, but who knows - maybe there's opportunity left to be more fake?
[1] https://g.co/gemini/share/3fbe558d4191 (Ask Perplexity, GPT, or Claude the same question - you'll get a similar answer)
[2] https://www.indiehackers.com/post/tiktok-views-are-inflated-...
[3] https://www.vice.com/en/article/get-buy-tiktok-followers-lik....
[4] https://medium.com/dfrlab/suspicious-third-party-apps-moneti...
[5] https://www.statista.com/statistics/1308893/tiktok-accounts-...