I think some people are forthright and outspoken, but a long game persuasion might be the best strategy sometimes.
I remember Linus Torvalds commenting on systemd, and accepting the work with upstanding neutrality (I wished he had rejected the binary log files)
"I don't actually have any particularly strong opinions on systemd itself. I've had issues with some of the core developers that I think are much too cavalier about bugs and compatibility, and I think some of the design details are insane (I dislike the binary logs, for example), but those are details, not big issues."