It's not bullying, it's common sense. Just because you won't use an idea that doesn't make it bad, hence no reason to vote no.
To insist that those who vote in opposition to you explain why they voted that way is one thing, but to then tell them that their reason isn't good enough so they shouldn't have voted is another.
You have highlighted three very different situations there:
"I don't like this idea because it would take up because _________." - That's perfectly fine.
"I won't use this idea and it will simply make existing things harder/worse, therefore I shall vote no." - Also fine.
"I won't use this idea, so although it doesn't impact me in the slightest I'll vote no anyway." - That's plain stupidity.
I agree it is wrong to demand one justify their answer then throw it back in their face, but that is not the situation we are lobbying against.