What is your issue?

Since cfgrib 0.9.9 (04/2021) it comes with its own xarray backend plugin (looks mainly like a copy of our internal version).
We should deprecate our internal plugin.

The deprecation is complicated since we usually bind the minimum version to a minor step, but cfgrib seems to be on 0.9 since 4 years already. Maybye an exception like for netCDF4?

Anyway, if we decide to leave it as it is for now, this ticket is just a reminder to remove it someday :)