I know it’s pointless to say it, but I will voice my opinion on that-
Ignore the gripers that aren’t constructive. You are exactly right; they want a perfect something for nothing on their part and will never be happy. They aren’t happy with their own life and take it out on others. Trolls, if you will. 
I don’t code, so this is all magic to me and I appreciate work done, even more so since it costs me nothing and I get to enjoy the results. 
Well done, frens.