2. Better have it than not. Plus, it makes for a single uniform plug design and specification that is straightforwardly adhered to.
3. IMO this is a good thing as it allows furniture to be set up considerably closer to the walls.
Funny you mention hotels, because I was in one in France not two weeks ago and it had the worst sockets I've ever seen. My phones took forever to charge, half the sockets didn't even seem to have power, and they all had this unintuitive setup where there was a spring loaded panel in the socket that needed to be twisted to get the plug in.
Now, I've seen some odd BS1363 setups, but never one this strange.