Comment Removal Criteria?

I literally only wanted to use Instagram for looking up porn star accounts and viewing softporn material, yet SOMEHOW I seem to mostly see non-porn material. Artwork and craft projects and whatever, everything but porn. Whatever, one thing I've noticed though is that if I make a comment on a porn star account and it's something lewd and inappropriate, it will never get removed for any reason, no matter what language I use.

YET, on multiple occasions, I've made completely G-rated comments on non-porn posts, the most recent one about the difference between Star Wars & Star Trek (fantasy vs sci-fi), and that comment will get removed, there's not even any curse words being used. I have no idea why it's happening, is it that I'm writing too much and using too many big words? I'll write the most offensive horny things on porn accounts, and nothing, but as soon as I write up a semi-intellectual comment on a non-porn posting, it gets removed. I'm just mystified as to what's happening and what's triggering it.