Backups should always be continuous. Not sure there’s any excuse these days for “data between backups” to even exist on almost any computer - save perhaps the document you have open and the last few words you’ve typed if you then spill wine on it.
The only time that they could migrate data from 2016 MacBook Pros onwards was when there was nothing major wrong with the motherboard or ssd. SSDs fail hard when they fail, so backups are just as, if not more important than they’ve ever been since the SSD migration started 10 years ago.
You should never leave your computer with Apple with an expectation that the data will survive IMHO. Your data is your responsibility, and always has been. When you leave the machine with them, they even make you sign a disclaimer and have for 15 years. No conspiracy here if you ask me.