The tests I’ve seen say that (depending on how you implement it) an iPad Pro M1 only pulls 5Gbps (directly powering) to 7.7Gbps (powered) out of a 10GbE card.
I'd generally agree, with the caveat that running a video editing workflow off of a NAS/SAN would want all the speed it can get, which is 10GbE at this time on MacOS/iPad OS (AQC107 chip).
So for copying files over it's bit slower, but for working with stuff it could be a pretty big issue. I really don't know; I haven't tried it as my iPad Pro is an earlier non-TB model.
Has there been some development in this area?