It's not about control. Transmissions in cars existed because internal combustion engines have a torque curve - the amount of torque you can get out of an engine varies with the engine speed, and so in order to maximize the torque at any given road speed you need to match the current road speed with the engine speed that produces peak torque. Now, there were different ways of doing this - manual transmissions vs semi-auto vs fully-auto and they did genuinely have pros and cons. For an ICE car there is genuinely a trade-off of how much control you have over the transmission.

BUT that's entirely untrue of electric cars, electric motors produce maximum torque at 0 engine speed and eventually drop at high speed. So there's simply no reason to be using a transmission at all. There is no decision to be made about gearing, you either have enough torque or you don't.