I wonder how you would think it was not?  I was neither discourteous or impolite to anyone here.  Calling the president stupid is not uncivil, it's a (well-supported by the facts, IMHO) political opinion.

I've had a two innocuous comments scrubbed as "uncivil" that were simply critical of Trump and his administration.  No bad words, no personal attacks, just not supportive of our POTUS.  Some people here obviously need a safe space or need to cowboy up a bit.

Seriously, unless a comment is an obvious personal attack on someone, I rate everything here as "civil", even those disagreeable to me our outright loony.  It's impossible to be a responsible, thinking member of society unless you can listen to differing opinions.