It's actually getting worse. The 2020 macbook air has soldered secondary storage. In a day when NVME drives are as tiny as ever. So now if you want to upgrade from 256 GB to 1 TB you need to buy an entirely new board.
I'm not sure, but hasn't it been like this since... 2018 or so? I thought all after-market upgrade possibilites were gone, because they started soldering the RAM and everthing else. Didn't knew you could upgrade any storage at all.