Very good points, and agree there is no standard solution for anyone.
I think enduro is a misleading term for track racers, as it works in the context of track but not really in cycling. Even an enduro is going to need some pretty good power and strength to survive a miss&out race or win a short scratch race. crit races are considered quite long to the equivalent track race.
That is not to say that weights are the key or only way to win those races, but it definitely targets an area that is used there. Strength translates to power, power to speed, speed to wins, wins to women. Or so the theory goes.
And of course, what are you goals. The Omnium demands a pretty solid balance of abilities.
I like doing weights, and for my build I guess Im an endurance rider (6'4). I feel like I am stronger because of them, but perspective is sometimes hard.