The nasty thing is that an increasing number of businesses block such onetime addresses (there are lists on github). Linux Foundation a prominent offender. They send me their marketing BS, but I cannot unsubscribe because "my address is invalid". My bank is a recent addition. They still send me email, but several functions in my online banking don't work because I have to "confirm" my email first and the one they have on file and works is not accepted.
I hope such services would be widely used that no serious business can afford to block them.