"This is crap" (without pointing why or how to fix it - of course with ruder words)
"We're not applying this fix" (without any explanation why and the system is pretty much broken/only works for limited cases/bug waiting to happen/etc)
"What are you talking about?"/patronizing behaviour (when it's crystal clear what you mean)
And usually the ones with thinner skin are the ones who try to push fundamentally bad things.
What I'm not fine with:
"This is crap" (without pointing why or how to fix it - of course with ruder words)
"We're not applying this fix" (without any explanation why and the system is pretty much broken/only works for limited cases/bug waiting to happen/etc)
"What are you talking about?"/patronizing behaviour (when it's crystal clear what you mean)
And usually the ones with thinner skin are the ones who try to push fundamentally bad things.