Every ranged champion can push a tower
What's wrong with this community? i just had someone that told me that ADC are broken because they can push a tower
No, just No. You're new to the game and don't know that there is in this game an AP ratio when you hit a tower.
Get

with 500 AP and tell me if you don't manage to push a tower
even support 
can push a tower for you if they manage to get 300 or 400 AP.
let's not even talk about this item combined with some mages like
.
And that's mages, because you can also get ranged toplaners easily those day. Or ranged junglers
And don't act like melees can't push a tower too, champions like
make the enemy not safe if they want to protect a tower. Champions like
can hit a tower while dodging attacks for a few second than disengage to wait 5 sec and dodge again.
Adc are better at taking towers FASTER, but they aren't requiered 100% to push a tower.
Adc are picked in every game because combined with a support they are the best lane bullies in the game while scalling in late game. they literally prevent anyone from farming botlane, if you don't believe me try to pick a melee botlane and have fun.
Thank you for reading

What's a tower?
can push a tower even when he is dead