You know the famous experiment where Pavlov gradually conditioned dogs to salivate when a bell was rung instead of when food was presented? That can probably happen with a person's sexual attractions too. ( https://en.wikipedia.org/wiki/Ivan_Pavlov )

I've talked to people on the internet who are aroused by strange things (e.g. balloons). If you aren't careful about the pornography you watch, then you might be unknowingly conditioning yourself to be aroused by undesirable or illegal things like child pornography or bestiality. Child pornography is a common problem for many people that can get them into trouble.

It probably all depends on the individual. Japanese anime pornography can be pretty ridiculous, but apparently that doesn't make everybody want to chop-off people's heads with samurai swords to experience arousal. IDK (sorry this is probably no help)

The stuff you are describing watching doesn't sound too bad to me. Probably if you use your brain, then you can spot any undesirable conditioning and correct it?