"Take it or leave it" is cool if it is a game or "I like the font to be blue" or "you are using Haskell, why don't you use Javascript instead". They should totally leave it and move on.

But now. He mentioned a valid security issue and instead of being glad and acknoweledging it you are dismissing it. With security issues that is not cool.

It doesn't help probably that you put "Docker" or "microservices" in the headline it would get upvoted to the top.