Those valves are nice addition to an already good fork. They are not a must have. In the 2021+ chassis there is also a new channel on the backside of the lowers which allows oil circulate better up to the bushings. And the Grip2 Compression damping is also a vvc type in the newer version which changes damper characteristics and problems some users had with the former version.
With all that said, if you are on a budget, the former version is already a very good fork.
Ride on