Doesn't look like it confirms either idea...
Worrying is a thought process that makes X dangerous. Because X is dangerous unless his thinking is fully analyzed, he has sealed him for 30 years.
Inafune has stated the series to be more than 100 years later and the manual says all indicators on the capsule were green, therefor it is save to open.
Where Cain's mistake lies was altering Right's worrying concept because he could not quite make it work.
I can't really see where Capcom is putting the Maverick virus blame on X,
They never did blame the Virus on X and Right. The Virus comes from Zero and Wily. What you're talking about is just taking what MMZOCW says out of context. MMZOCW establishes Sigma Virus' true essence is X's suffering circuit which causes worrying. They never say how or why. All the other sources establish that Sigma Virus' true essence is more than likely making Repliroid into an irregular.
The way it does this is by making use of a weakness that all Repliroids have by design. Repliroid design is based on X. X's way of thinking was incorrectly implemented in all Repliroids. Right's warnings was not about replications of X, it was about X himself. But with X himself worrying actually works so well that he's special. X's 30 year period was up, it's the other Repliroids that are improperly replicating that.
And I'm pretty sure IHX was attempting to retcon it to where X was discovered before the necessary time. If it's still the same hundred year timespan,
IHX actually has Right admitting he doesn't quite know when X will be released, he's merely expecting a far off future because the world itself is not yet ready to accept X.