You’re right. They just don’t know the law. What makes it funnier is how they’re extremely arrogant and confident about it despite it being blatantly obvious to anyone who knows how to drive

> Two solid yellow lines prohibit vehicles from crossing them to pass another vehicle. You may not cross these lines unless turning left when it is safe to do so.

https://www.mass.gov/doc/chapter-4-rules-of-the-road-0/download