Okay. I don't know if it's wise to get into a discussion about inclusive language here, but I'll just say that I have serious reservations about much of the enterprise, and I'd guess that the majority of the population would share at least some of these reservations. The webpage you've linked advises avoiding the phrase
blind drunk because it may associate impairment with negativity! I take particular exception to the idea that the British government feels it has a place to advise on language use.
My strong view on this issue is that we should not be pushing this kind of prescription on the forum (and I'm glad we generally don't), although I feel equally strongly that we do have a responsibility to make learners aware of any issues of usage, especially when it pertains to the potential consequences of their word choices.
I really hope this post isn't seen to be an inappropriate expression of a political view. I'm normally very careful not to mention anything to do with politics, but this particular issue is wholly about language use (exactly what we're concerned with on the forum), which is a topic I'm deeply interested in and thoughtful of, and which I think should be openly and respectfully discussed.
With view to how commonly used the word
handicapped actually is, I'll agree that it is significantly less common that it was ten years ago, across all kinds of discourse.