Remember #Linux' pktcdvd driver, which allowed direct mounts with UDF of cd-rw drives that required 32kb packets?
That driver is now scheduled to be removed with #kernel 6.17, as a patch deleting it landed in linux-next today – that use-case is considered uncommon these days, as "the world has moved on from those kinds of media. To make matters worse, it's actively breaking setups where it's not even required or useful."