Well. How about NOBODY checks in. I'm inclined to refuse. I am an adult. I have never in 16 years of flying caused a late flight because of my late arrival.
I've personally only seen a pilot delay a flight once. Yes, that was at JBU but crew services was fully aware of the issue.
If no one participates in check in we can't all be disciplined. Also ALPA cannot say not to participate. They will tell you we are required to follow the FOM.