[RedDevil]

I for one do not ignore the need for faster traffic to pass.
I check the speed of the semi behind and move slightly to the right of the lane hoping they understand I'm trying to cooperate with them as best I can. So I move up to the semi ahead as far as is reasonably safe, and when they do overtake I drop back to leave ample space for them to merge back in if they choose to do so.

If a semi wants to merge from an on ramp I drop back and signal with the high beams, just like they do amongst themselves. I get the thanks wiggle more often than not.

Once a month or so though I somehow wake the ire in a semi driver.
They drive up to inches of my rear bumper but don't pass, even if they have all the opportunity in the world, and sometimes flash or even hold their high beams. I'm driving at a constant speed at a reasonable distance to the semi ahead as always.
I tried several strategies to make them pass me or keep distance, but anything I do only seems to aggravate it. Just keeping on going at constant speed ignoring what's happening behind does actually work best so far. When they finally do pass I drop back, as always, and signal when there's space to merge. Dropping back is a good strategy in these cases anyway, as once or twice the driver deliberately squeezed me into the emergency runoff. I still think that means they are crazy, not me.