The only problem I see is that bikes are also very easy to be stolen and the police here (Finland) doesn’t seem to do much about it.
i solved this by getting insurance. when mine was stolen police told me they never find them except when they find a huge number of stolen bikes all at the same place and time (eg a warehouse, a garage etc)
*it may be a different grade steel than a lock steel
For completeness sake, I used a machinable steel rod, turned to 18mm. For cutting I used a Makita 18V grinder with a 125mm disc (I had a partially used disc. A full disc would cut it faster) and with a full battery (it cuts slightly slower as battery runs out).
I have the Kryptonite New York Fahgettaboudit Mini. Two cuts are needed to remove it. Along with the quality of steel, and awkwardness of cutting a lock that isn't clamped in a vice, there's no way the thief will be done in 20 seconds.
The best seems to be the Hiplok D1000, which took 20 minutes for them to cut using a corded grinder, vice and several cutting blades. https://youtu.be/GMg6zVdYI0g?t=179
The Hiplok weighs 2kg, (same as my Kryptonite), so looks like a great lock for e-bikes. Only problem is, everyone wants one and not enough supply.
this didn't help me. they cut through that easily.