I just had a look at the last active dates of a couple of those profiles and they are within a few hours of each other which cross verifies the connections.
No, no it does not "verify the connections." It's one of the flimsiest pieces of connecting evidence that there is, down there with "speaks the same language." Assuming accounts are alts because they logged off "within a few hours of each other" is dumb -- almost as dumb as using a dice site's data to connect forum accounts, but not quite.
Timelord needs to reign in his butt hurt.
Yep, you're most likely right. Good job on identifying the next suspect, we'll watch and see.