No, you continue traveling at a safe passing speed until there's space to safely move to the right at let the faster vehicle pass. Just be courteous, basically, and don't play vigilante to "enforce" one rule (speed) while ignoring another (keep right except to pass, and the probably unwritten, pass quickly).

I certainly never said that speed limit plays no part in the equation, but I believe that safe speed for a given combination of vehicle and road and traffic conditions is much more significant than the legislative limit.

Your question works just as well when the example is reversed: if someone is blatantly disregarding lane discipline, why should I expect them to drive safely in any other regard (and why wouldn't I try to put as much distance between me and them as possible)?

200mph vehicle in this case is an asshole if: a) she doesn't slow down and leave a safe distance between you and her in order to let you finish passing b) she otherwise creates a dangerous situation from excessive relative speed, which would probably be the case most of the time if she's going that speed around other traffic