Of course, I know that. I just mentioned Africa because, in many
countries in Africa, it is simply impossible to get a PTR
record. That's a fact, there are many reasons behind.
It is also an area where many cctld operators maintain their registration
data using spreadsheets, and "whois" isn't :43.
Not an issue of activel malfeasence, other than early adopter attitudes
towards late, and challenged adopters. As you note, there are many reasons
behind [it, the impossibility to get a PTR record or a :43 server connect].