Just FYI, I'm running stock 5.10.0-rc7 with two patches for the new Intel Wireless 6E card compiled using the Debian Docs to create the kernel package. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977299 and Official OpenZFS 2.0.0 source that I compiled against 5.10.0-rc7 source and created the deb packages it's working fine for me. Hopefully 2.0.x is added to Bullseye.
Chris