This person is incorrect and doesn’t know what he’s talking about. You need to look at the full video of it action to realize the difference in behavior from 17.3 and 17.4 beta 1 and beta 2
Both can be true. If what you did before doesn't work now and potentially drops your storage, the explanation doesn't matter. It could be a planned improvement in theory. It still broke things for people - literally dropped support for some PWA that mattered to people.
https://x.com/jamesrlandrum/status/1755411290107863429