I wasn't really a fan of that page either, but I have to disagree with this person, especially about the 'judge, jury and executioner'. The objective of the page is to publicise misognynistic comments, which helps raise awareness of the misogyny in the everyday environment. Even though names are posted uncensored, no-one is summoning an online mob to go after people. Just because you liked the page doesn't mean you're responsible for anything that goes on in the comments section either. I'd see liking the page as a passive way of giving support for equality, not sabotaging the cause through overaggression.
It also sucks to find out that people can change their opinions of others so quickly, and to me that person's reaction seems completely undeserved (especially tagging you publically rather than in a PM conversation). I don't know you very well, but I hope you feel better because you've done nothing wrong ><.
i hope you don't mind me publishing this! but ahh thank you. like -- i'm not so keen on the page in some ways, but i did want to give my support, which is what the like was for, as you said! thank you for the message though ahh <3 you're lovely