It could hardly be "totally without merit". Most of those disputed facts are really "he said, she said" situation where not even the experts agree. Stubbornly sticking to your guns and using loaded words without going into details as to where specific details come from is -- well let's not use mean words.
Basically what they're saying is that Nature messed up and that Wikipedia has more errors than Nature claimed. "internet database anyone, without specific qualifications can edit" is a jab at Wikipedia's open community" for no other reason than making themselves look good.
I'm having a hard time with the idea of sending them a "nice" message.
Mgm