I think a hub motor with a torque sensing bottom bracket is not really different in feel to a store bought mid-drive ebike. Yes you can make the point off-road for mountain biking the motor is better placed in the bottom bracket area plus of course e-mountain bikes with mid-drive motors are typically very powerful up to 100Nm torque at the crank although they are pulling close to 900W to achieve that.
I also think you shouldn't confuse price with quality. Hub motors are simpler and typically more reliable than mid-drive motors. Some of the more expensive mid-drive ebikes are short life disposable products which often become uneconomic to repair. The frame is dedicated to the motor and the motor is paired with the battery etc. One element fails and you have a very high bill or it's uneconomic to repair. Mid-drive motors have internal gearing sometimes belts and the controller board with all its heat is right next to the motor. There are lots of thermal issues with mid-drive motors and often they can drop power on long ascents, chain snaps are common. I personally consider overall mid-drive motors as inferior to hub motors except for off-road use.
The thing about hub motor ebikes is they have two independent drive systems, you peddling and the motor itself and they can work independently of each other. If by chance you damage your drivetrain and break the chain you can ghost pedal home on motor power or of course if the motor fails and stops providing assist its just back to being a heavy normal bicycle depending on fault. I just think for long distance cycling they make much more sense and you can have a torque sensing bottom bracket instead of cadence sensing if you want the same sort of feel as a mid-drive motor typically from Bosch, Shimano etc. I question the point of low power mid-drive ebikes as they often provide less power than hub motors. Some of the Specialized lightweight commuter based ebikes only provide 35Nm and by the time you have factored in the gears you are down to 25Nm or less. All that extra complexity for a very low power ebike. Just seems pointless to me. However at least being so low powered means while the drivetrain will wear faster than normal its nowhere near as bad as a high powered e-mountain bike approaching 100Nm of torque. The statistic is from a few years ago but I remember a Chinese industry statistic that over 95% of the ebikes they sold were hub motor based and that other 5% didn't just have to account for mid-drive motors but other types of motors like the brushed motor kits that are popular in India which mount to the stays. Remember the average price of a bike sold in the UK is about £400-500 including ebikes. This doesn't allow for a huge amount of high cost bikes and ebikes.
Also wasn't it Specialized that had a ebike battery fire safety recall?
https://www.specialized.com/gb/en/30-august-2022-safety-notice
These are very low volume products too compared to other ebikes. I'm not seeing huge number of pre-built Chinese brand ebikes getting battery recalls and if they are sold from within the UK they still have to go through the same certification and testing process including the batteries. There are much greater concerns with modified ebikes, ebike kits wrongly configured and of course personal imports etc like aliexpress where the ebike may not have gone through a certification process.