I had not heard of carezza, you mean this?
https://en.wikipedia.org/wiki/Coitus_reservatusFor the same reason I don't find Massage Sexy, I don't find ASMR sexy. It puts me to sleep. It mellows out my anxieties and makes me forget that I am running in twenty different directions.
It is intimate though, very much so, and I can understand why you would feel uncomfortable around relatives Pergamos. I find those face touching, shaving videos a bit shocking, very invasive of personal space, not in a bad way but very sensitive and raw.
It is yet another facet of our daily lives that now has a digitised knock off, we can post opinions for validation, get our humour stories, escapism and pornography online, now we can also get intimate experience without the need for a connection to another person. I'm not sure if its a good or bad thing.