Other way around. They'll try to upsell you on a 5 euro feature that locks the bike to your phone and prevents family members (or thieves) from using it. Though since almost no ebikes do that, it doesn't work to reduce theft.
Not much point in the app unless you want to transfer routes to a map app on the head unit, though.
Like with some cars, they then get sold for parts or there is a hack to work around it. I just put a gps tracker in the battery to get insurance money since the cops will do nothing (but will if you go after you own bike to stop you from trespassing).