Windows Home and Professional are aimed at individual users...
... not large corporate networks.
MS' primary assumption is that BOTH Home and Pro users will not usually have professional IT administrators to support them. That means Microsoft themselves have to do that.
Hence the alleged "nagware".
This is MS making it crystal clear that they are simply not willing to provide endless ongoing free support to Home and Pro users for older versions of their OS.
The only reason Windows Pro connects to AD and the like is because many freelancers need to be able to connect to their clients' networks to do their work. It is not intended to be installed on clients in a complex corporate network environment with paid IT staff.