I verified that Pleroma v2.6.0 handles FEP-e232 links correctly and enabled FEP-e232 on my instance.
This means people who use older versions of Pleroma won't see my posts with quotes. I rarely use quotes, but if you're on a Pleroma server, consider updating or applying the patch.
Other Mitra instances have FEP-e232 turned off (by default), and I'm not planning to toggle the switch anytime soon.