I can understand your point, but taking the case of rocket/jjt against wheels, your damage against them is also reduced. Jjt used to be good counter against tank & bike, but now the wheels can kill the jjt before you destroy a tank, and almost enough to protect the bike. Jjt can counter 2 squad of war dogs, but not wheels.
The problem is worse if you play against squads with higher levels. You can have a hard counter against other units and you may still win, but simply with wheels and bikes (only a war factory with 2 low cost units), they can handle most early game units and gaining huge advantage.
It is not uncommon to see people spamming wheels, militant, laser and bike even without harvester. With the high mobility, quick spawn rate (they dont need a harvester) and low cost, this could hardly be countered, even if you have a no tech squad or the game end before you can safely get out a tech unit. The pricey tank and fragile pitbull just make the situation worse.