In general context yes, but if you tell your top contributor that besides doing full day job work for entire year for free (while main author also has commercial offering) he should also babysit "dumb" users (making entire job not fun) and you get the tip multiple times that such behavior will alienate him from the project, you can be sure there is a way better approach to project management. Since I left it, the PRs and issues that nobody looks at started to pile up (I kept both at almost 0) which is extremely important given that project relies on constant PRs and reports by the community.

Here is the meme:

http://content.randomenthusiasm.com/d4ZEVg4VB.jpg

Not exactly profane I would say but what do I know ...

Not profane, but condescending nonetheless and not appropriate in a professional/code review setting.

Its FOSS setting, not a professional setting. Being a jerk to people that do excelent stuff for your project for free is far from appropriate in any setting on the other hand.

Professionalism doesn't get left at the door at 5:00.