The worst part of getting a bike stolen is the police report. They have better things to do and treat your "bicycle" theft as such. It's either "Its a cheap bike, no biggie." or "Why did you spend that much on a bicycle and not have better security?". I don't blame them at all for that general approach. Your friends will say the same thing when you tell them your X dollar amount bike got stolen. And don't bother going all vigilante. Running the thief over while their on your ebike might seem like a good idea in the moment but most of us are to pretty to survive in prison. My wife has some good stories from her days working at a Level 5 max scum prison.
not my experience. have had a bike and a scooter stolen, police. did an e-report for one, totally trouble free, the other was part of a larger burglary of a common garage area and the police were prompt, professional, and got the report back in a few days, no editorializing. insurance paid promptly, bike replaced.
to answer the OP - most e-bikes are reasonably good theft targets. very cheap ones have the benefits of being anonymous and easy to sell. expensive ones are, well, expensive, and more targeted by experienced/professional thieves. use good locks (the heaviest u-lock you are comfortable carrying, at the very least one where both sides have to be cut), park in high traffic areas (a couple minutes of sparks flying from an angle grinder will get a lot of attention in an urban area), within direct sight of lobbies, crosswalks, etc, and don't leave your bike unattended for days on end. that's just asking for someone to see it multiple times and come prepared. no lock will stop a prepared, planned theft... and that's why you have insurance, which is the last layer of defense.