He is deliberately land-grabbing domain names in the hope that he gets in the way of legitimate users enough that they pay him off? Scummy.
People try to distinguish between domain squatting and "domaining" by saying that the former is "bad faith" but the latter is not, but I don't really see any difference.
https://en.wikipedia.org/wiki/Cybersquatting
https://www.godaddy.com/garage/what-is-domain-squatting-and-...
I hope that ICANN release enough new TLDs that this problem just goes away by dilution and the "domainers" lose all the money they "invested" in this scummy practice.