I believe that suggestions will not be unwelcome, but obviously some people’s “suggestions” are always mixed with too many intense emotions, making others feel that they are not suggesting, but urging, asking for or even blaming, which will naturally arouse irritability, especially when dev don’t yet, can’t, or don’t plan to do it, those people considered it is “insulting”.
This is according to what the developer once said. I speak based on reality and facts.
Also, I’ve said many times, never compare AoE2 to AoE3. What works for AoE2 may very well not work for AoE3, and vice versa. They are completely different games.