That's apparent enough from the fact that you don't need a jailbreak exploit to boot non-Apple-signed kernels on a Mac, unlike iPads with exactly the same silicon. They are intentionally configured differently.
iPads are cheaper than MacBooks and more popular. They'd rather prefer if you bought another one instead of using it indefinitely. The same with smartphones. The answer always has been: I like money!
iPads and MacBooks are architecturally different devices with different purposes (but soon the difference may vanish). People tend to upgrade their phones/tablets more often than their PCs/laptops. Macs aren't locked down because they are designed NOT to be locked down. You can write drivers for macOS (otherwise it couldn't compete with Windows or Linux) but not for iPadOS.
The way how you were using Windows did not matter. There was no way how Apple could distinguish this use anyway. Apple did not know if you were using Windows to extend the lifespan or just needed Windows apps. If you're allowing Windows, there's no reason to lock the bootloader down since people could heavily modify Windows and use Linux on Windows anyway.
Since Apple has moved onto arm, they don't need to lock it down, at least yet, because Windows is a no-go on arm, and it's slowly becoming AI slop anyway. There's only Linux but then if they locked the bootloader down they would distance themselves from the competition. And people do write drivers for macs.
Meanwhile jailbreaking iOS or iPadOS has more use than doing anything you want on macOS. For example removing ads on Spotify, YT or running cracked apps or ebooks. Yes, you can do the same on macs, but you do not keep a Mac in your pocket.
However if iPads and MacBooks become one thing, I'm pretty sure they're still be more restrictions.
I so want to run my os on ipad and save it from the ewaste bin.