A lot of the discussions here treat all trademarks as if they were equal. They aren't. Also, the idea of a surname being "generic" in the trademark sense of the term seems a bit odd, unless the surname happens to be something like "Smith" which is also an English word for a person who pounds iron on an anvil.
When you say that #####.com is the company's website and ###### is "part" of the Company's name, those facts do not necessarily mean that ##### is used as a trademark by that company. Is it a distinctive part of the company's name? Are they primarily known as ######, or by the whole name?
And what about you? If I selectively went through all of the domain names you've ever owned or sold, would I be able to come up with enough terms that also happen to be trademarks, that I would be able to persuade a judge or UDRP panel that you've engaged in a pattern of registering trademarks?
It's not an "emotional debate", but it can be subjective, and can depend on how well you argue your point. Take Barcelona.com - a perfectly legitimate domain name registration. Now, it has taken one UDRP panelist, one federal judge, and then a panel of three appellate judges just to get that one boneheaded dispute to come out the right way. Was the registrant cybersquatting? No. Did it take years to prove that point? Yes.
JH3 also raises a relevant point about the history of enforcement that any of these parties might have had relative to similar variations on the term.