This is the reason why I have:

$ cat ~/.cpan/prefs/PERLANCAR.yml
---
comment: "We need only one CPAN"
match:
    distribution: "^PERLANCAR/"
disabled: 1
[download]

Not that I don't value his work and contributions, but I don't want to litter my system with a duplicate of every module already on CPAN.

I agree that there is no problem communicating with them. Nice person indeed!