There was one specific case of a young, formerly Frum girl/woman being baptized which was videotaped and circulated online. I think it’s no longer public.
I don’t know her story but if I would have to guess, my best bet would be that she was trying to hurt someone in her family by PUBLICLY converting (unless the video was not her doing, then there are different possibilites).
Of course this is a lot worse than “just״ being OTD, which she clearly is.
I forgot her name, but she used a very obvious Jewish/Yiddish name in the video clip (which someone brought to my attention and I probably shouldn’t have watched) and was surely trying to provoke.
This is the ultimate Chillul Hashem, almost impossible on such a scale just a generation ago. In addition to that, there are the actual aveiros she committed by shmad’ing. We have a lot to mourn over.