Maybe when i started cycling, your pov would hold good but nowadays, the cyclist, no matter what they do, will always find themselves ahead of faster traffic and lots of it.
A road near me, i used to ride on regularly in the 80s would have so few cars on it that "holding up traffic" was an impossibility, i could cycle on A roads with no issues at all, but now that road (and most others) are extremely busy, used as a cut through to get to the A30, rather than use the A388 to Launceston, i would never use the A388, during the week, its a death trap, often closed due to cars crashing into each other (they aren't accidents, its stupid driving)
I get where your coming from, i do but i just think its impractical, all, imho, a cyclist can do is use quieter roads and let cars pass if safe to do so.