That's not true I'm afraid. You can drive whilst wearing a helmet, headphones or earpieces, use a hands free bluetooth set to hold a conversation, blast out your music choice, and even be deaf whilst driving. All without penalty or lawful impediment. :)
@mermeo29 What's up with your legs? How long are they? :) My 'not very tall' 8 year old grandson has no problem riding my ebike with a suspension seatpost fitted.
Springs compress with weight on them, so there's not much more of a height raise over a regular seatpost there. Generally...
Do you know about this yet @Andrewscotsman ?