I agree with all you say. And I also understand being angry about a project for not considering me as a user enough. However, "There is absolutely no reason to

I agree with all you say. And I also understand being angry about a project for not considering me as a user enough. However, "There is absolutely no reason to not be answering emails" gave me the impression that at least one person is demanding replies to emails. I still feel it's okay to tell the quoted person that if he doesn't pay someone he can't demand from that person to answer emails. Last but not least, if someone hasn't answered emails for some time, who seemingly had enough trust before to be important in a software project, then it may be wise, even for people with legit demands, to see whether or not that person had good reasons for his absense or not.