My car has keyless entry (VW ID.3) and it is immune to the repeater attack that has plagued many keyless-go entry systems. It uses UWB keys. UWB keyless technology measures the distance to the car's key using the RF delay time. Inserting a repeater into the system - short of breaking the laws of physics - will never make the key look like it is closer than it is. So you cannot steal the car by using a repeater device. You must have the keys yourself.
The system is incredibly precise - I can take the key up to the edge of the door frame of my car and the key is seen to be in the car. If I move it just 5cm further, the key is now 'outside' and cannot be used to start the car.
None of this technology can protect against an attack on the car's own infrastructure, as has been seen with Toyota and Hyundai/Kia vehicles, of course.
Having said all this about how it's quite a clever technology, do I regard keyless entry as important? Not really. I still have to put the key somewhere in the car (the fob is a little too bulky to fit in my pocket comfortably). I still have to remember to take the key out. If I had a choice, I would not pay for the keyless entry system... If it were a cost-free option I'd *probably* go for the mechanical key instead, even though both are just telling a computer to turn on or off. Just because I feel like a mechanical key is less likely to be forgotten. I have also had some issues with one keyfob failing which was replaced under warranty, where the key would be intermittently not detected, this feels like an issue that would not exist with a mechanical key (since the immobiliser is RFID and can be read even with a dead keyfob battery.) There's still a backup mechanical key in the keyfob itself, hidden away, in case you need to get into the car when the battery is dead, so there's no reduction in simplicity there. It does feel a bit like a solution looking for a problem.