i don't really have a problem with sites implementing monetization, but i have noticed a monetization creep in a lot of mainstream social media spaces that are just blatant cash grabs and don't make any sense if you know basic tech stuff. see: tumblr premium, which appears to be a 70 USD a year ad blocker. you can do the same thing with ublock origin and new xkit......... or revanced if you can follow a guide.
i dont really mind for some sites, though, if what was already free remains free. like if a site offers paid courses + certification bundles but keeps pretty much all of the resources free im fine. but if suddenly it requires me to make an account and then asks me for 200 bucks to look at something i was looking at yesterday im gonna assume that the people in charge view people only in how much money they can extract from them
which i guess is my biggest issue with site monetization in that regard. i dont mind if people sell extra stuff on the side but it shouldnt be like... taking over the site.
i do have some issues with certain sites that are run by donation campaigns but theyre mostly because some of them that make their financials public have revealed that they severely mismanage the funds or don't actually make any efforts to manage the site effectively using those funds