Like anything else you care to name, something that is misused is a bad thing -- and this includes bow thrusters used by people -- especially in widebeams, it seems! -- who can't steer without them.
That doesn't mean they're not useful in the hands of people who use them appropriately. If you don't want one, don't have one, that's your choice.
You could say exactly the same about many other things -- alcohol, fast cars, quad bikes, ebikes, many foods -- that they can be lethal in the hands of idiots. But that's not the same as saying that they're completely useless and should be banned, which is the "nanny state" approach you seem to be taking -- and in particular, attributing thoughts and motives to others that may well not be accurate, the "useless scrounging scum" principle beloved by the Tories -- or in your case, useless BT-dependent steerers... 😉
There are entirely too many people today who want to ban other people from doing things that *they* don't like, regardless of what the other people want... 😞