This is very much true, it’s also for safety reasons.
You guys can bitch about truckers all you want, you have no idea of the pressure and stress an operator of one of those vehicle goes through.
Both KrazyKid and I (I was the safety manager for the facility) worked with 60+ CDL drivers on a daily basis. I would always recommend a driver to merge into a faster lane if someone is broke down on the side of the road, I could care less if he slowed down 100+ cars to 60 mph, it’s better than him hitting and killing someone.