Back when I was a JW a C.O asked for a show of hands as to how many actually liked the D to D work, hardly a hand was raised. I cannot see it being any more popular today. Unusually,he went on to say HE did not like it, but of course trotted out the reasons why it should be done.
I noticed a couple of years before the pandemic, so 2017ish, that the enthusiasm that formerly prompted a visit every 6 weeks or so up until then, had waned. The visits dropped to once in 3 months. I could gauge this because I worked from home, and from my desk could see who passed by in the street. (by then I was a Do Not Call, not because I asked for that, but because I was considered "dangerous to faith" for JW's to talk with me, LOL).
When I was in we had a good number who rarely took much part in D to D, including a number of Elders, we had some who were expert at avoiding it by doing "return visits" etc.
So, what with a general dislike, fake hours etc, how much actual door knocking will go on ?