censoring hitler like he's voldemort is pretty fucking gay.

It also censored "Nazi."
While it is extremely likely to be because voldemort, I think it also might be hedging against algorithmic censorship on tiktok. From what I've read, it seems they have a strange selection of "bad" words. A notable example was that they censored words associated with death, which was apparently partly why the term "unalive" has surfaced.