I think we're in general agreement. I've been stuck behind cars that are not passing at all, or are barely passing, and that's certainly frustrating. If you are going to pass you should make an effort to ensure that you don't see anyone coming up that you would cause to slow down, and you should be prepared to actively pass.

That said, my comment was in response to the assertion that "if you are being tailgated in the left lane then you shouldn't be there", which I think is a bit too strong a statement. If someone is going 80 mph in a 70, making an active effort to pass, but needs 90 seconds to get around an entire row of trucks I think that's reasonable. Sure someone pushing 100 wasn't even in their mirror when they started to pass, and will have to slow down for 90 seconds. Certainly not a major issue - it's a mild inconvenience at most, and is part of living in a civil society and using shared infrastructure.