Care to name one game hoster that has such a feature, except Steam?
I tried to find one, and could not. Most sites do not even have tags to begin with.
Before these discussions here, I did not even know that Steam had such a feature.
It would be helpful, sure, but I disagree that this is the most basic of features. I do not think it is as high in demand as some people think it is.
Did you tell Itch with the feedback button that you would like to have such a feature? This is not about refusal, it is about other features being easier and cheaper to implement, and more in demand and Itch not having such a big budget, what with all the advertisement that is not happening and all the subscription fees that are not existant.
Before they put developers on a stable tag exclusion they better put them to work on a better malware detection and hacked account prevention and detection. I see a complain thread about tag exclusion every few weeks. I see hacked accounts several times a week, but practically no complain threads from the hacked accounts.