It's like that because people are still buying. Even for the ridiculous prices Apple asks for.
So why would Apple actually care? They get away with this "quality", so from a business standpoint there is simply nothing that needs investments or even just attention.
It's a race to the bottom. Like everywhere else. That's simply how the system which people created works.
- Very slow, even on an M4.
- 3rd party devices are often unreliable. Not directly Apple's fault, but the lack of certification process hurts
- SMB extensions: In order for an SMB server to support Time Machine, it must support Apple's AAPL extensions to SMB (my understand of this my be a bit uncorrect)
- Network device connecting is separate from Time Machine device connecting. This causes an inconsistent UX.
- Not possible to browse a backup. You can only view file or folder's backup over time. In other words, you can scroll through time but you can't browse a single backup (point in time). This requires using 3rd party tools like BackupLoupe
If you know it's unrelated, why try to derail this discussion? Why not start another? What's the point?
Could it be that you only posted this in an active thread so it would get the most eyeballs, instead of being judged on its own merits?