The only way manufacturers will stop fitting idiotic crap to their cars is when we stop buying them. We've just bought a facelift Leon despite me disliking electric handbrakes but I've looked at the junk they've put in the new Leon and decided, no. I'm not buying that.
And you need to tell the dealers why you're not buying. If enough people give negative feedback about features they dislike and sales take a hit the manufacturers will notice and make changes.
Maybe...