Would it be inappropriate to point out there was an entire decade in which all four were not involved with the show at all, and that Eccleston was invited back during that timeframe and he refused?
Some people on Twitter have suggested that he was still allegedly blacklisted by the BBC at this point (I have no idea of the truth around that) but I guess it was also still relatively recent and maybe it was all still a tad too raw. I'm still in two minds over this. It obviously had a big impact on him but I do wonder how much of the problem was him, he doesn't always strike me as the easiest person to work with, and yes you could say no one else seems to have had a problem with him but then no one else, so far as I know, has many bad words to say about RTD.
He does need to let it go before we wind up in Shatner/Takei territory and he's still going on about this at conventions in 2045