But the Bulbasaur line can only learn Bind via Tutor in BW2, ORAS and USUM. BW2 was five generations after the Venusaur line was established, and it can never learn both Wrap or Bind in Gens 8 or 9. Not to mention that both Wrap and Bind were nerfed after Gen 1, so why couldn't Venusaur learn Wrap after Gen 2.Wrap is not a tutor move like Bind has been, it's only learned via level up and usually early since it's bad. They weren't gonna make Bulbasaur worse in later gens, and it starting with Wrap in gen 1 would have been incredibly annoying to fight if you picked Charmander and painfully useless if you picked it.
Venusaur can learn Bind so would likely learn Wrap if it ever showed up as tutor or TM move.
I also disagree on Venusaur not learning Wrap would have made it annoying in a playthrough because of its 80 speed. Plus, Erika's Victreebel and Tangela both have Wrap and Bind and whilst they aren't as fast fast, but they are also annoying if they also pull it off. So Venusaur should have learnt Wrap and it's not like it's the only broken move. Plus, wouldn't it also mean that the Charmander line shouldn't be able to learn Fire Spin in Gen 1 (even tho it does), which also works like Wrap in Gen 1?