I think you and GP (about Lucas Chess) are using the term "drive-by PR" differently.
I agree with the GP's definition. I consider a drive-by PR to be one made by someone who doesn't intend to become a regular contributor to the project but does have real motivation as a user of the project to get their "itch scratched" (a bug fixed or some feature that matters to them added).
I also understand the type of PR you're describing (and agree with you that it's a bad idea) but I think it needs another term to describe it. Maybe "non user PR" or "CV driven PR" or "Vanity PR"?
(edit sp)