I think the gank bot to win meta is cause by junglers having too much power.
Right now, junglers can fail ganks and still not be punished for it because of the abundance of exp. They are also stronger overall.
Last season, ganking bot early was always a risk. If my bot lane followed up a smidgen too late, the enemy could crush me by then. But with junglers in their current state, they can gank bot risk free.
I have seen a lot of people say "adc's are op" and what not. But I personally feel junglers are out of line, not bot lane.