The most concerning thing, besides the bits that are factually wrong (no proposal, this was just documentation), is the preposterous claim “The standard practice is to tag the access rules explicitly …”
Now I realize that the explicit tagging fraction believes it has won because it has a big stick and wields it indiscriminately, but in reality, not only do most have no idea what the actual laws are for their country in detail (just consider HGV categories and other non-automobile transport means), nor does OSM have vehicle/transport mode modelling that is fine grained enough to express such details and neither is OSM tagging expressive enough to model the more complicated rules that likely every country has.
Regardless of if a routing engine dev/operator wants to go in to any detail in modelling or not, the only thing that makes sense from a pure practical pov is to map the exceptions to the rule and not to try to to recreate dozen of pages of legislation every time you want to map a road.
PS: I would note that for whatever reason, it was found necessary to write half a treaty on why the Dutch table is wrong, instead of fixing the table values and adding comments where things don’t really work for OSM, like essentially everybody else has done.