Not to mention zero latency. Trying to have multiple people in a car play music/podcasts is a nightmare over bluetooth when you used to be able to just pass an aux cable around.
I have an older pair of JBL E55, which are about 50% cheaper than yours, and on a modern phone they sound slightly better on wire than on wireless, presumably because their internal DAC is mediocre.
The strength of a chain is that of its weakest link.