Or, an actor got his knickers in a twist over the terms of the contract he signed and was obliged to uphold. I'm no fan of Berman et. al, I think that should be obvious by know, but this doesn't really read like "OMG BERMAN IS SUCH A DICK!" it reads like Actor trying to call the shots for the whole TV show to further his career outside that TV show. I realise I have no proof of this whatsoever, so I'm not trying to say this definitively, just reading between the lines - particularly the first paragraph sounds rather puffed up with importance, trying to underline his immense non-Trek fanbase.
That's exactly how I saw it. Wheaton always comes off as smug and pretentious, but in a way where he tries to conceal it through being 'cool'.
It sounds to me like Wheeton wanted both slices of the cake and Berman was trying to organise the show around a budget and a schedule, not at the whim of a teenager and his career prospects.
The whole article by Wheeton smells of shit, puffery, lies and 'Dem evil producers'.
Please. We're talking about a teenage kid that wanted to do a project over the hiatus a project that would've precluded him being in *one* episode and as he said, he wasn't the captain he was the firggin' helmsman. The Producers acted like they owned him by not showing him an ounce of leniency and lettimg him miss-out on one episode. Furthered by the fact that Berman told Wheaton that he couldn't miss the episode because the episode was about him, which was a bold-faced lie.
Berman acted like an arrogant bastard instead of an understanding and reasonable man. I don't see how a teenage boy could be pretentious or prima-donna and it's not even like he had a lot of weight to throw around.
He wanted to miss-out on ONE episode and Berman didn't allow it because in Berman's mind he "owned" Wheaton.
Wheaton left because TNG's producers weren't working with him or his career but dicking around with him and treating him like property.