How would you react if you found out your partner was watching porn?

I’ve asked this question on two different subreddits bc I’m curious about the different perspectives/opinions people have regarding this topic. The opinions seem to differ somewhat depending on sexuality and gender (not always of course)
But porn is so normalized and people on Reddit seems to be very “pro porn”
I myself have recently entered a relationship, and I feel like watching porn can negativity impact your relationship.
Is this something you should discuss with your partner about?