The point of my previous comment is that I don't see many people swapping their car for an ebike. That would be the key metric to judge this scheme (alongside the actual cost to taxpayers...)

I am sure some people will use the scheme but probably because they were thinking of getting an ebike anyway and a replacing their car for a new one...

It's the usual and main issue with those schemes: they are political decisions and don't always make practical or economical sense.