I’d wouldn’t say it’s not important.
My set up if a Raspberry Pi using an SSD, and in the space of 3-4 hours I see 400MB of writes by Plex, obviously not all by this process, but it makes up enough of it that having stopped it via the Settings > Web Client > General > disable Advertise as Player Plex Media Server doesn’t even appear in the iotop listing now!
Tom