Comparisons of Bester to Byron don't work in a moral context. It is generally not considered within the realm of proper ethics to place the oppressor and the oppressed on the same moral plane. That is akin to blaming the victim for the crime.
Byron did not "blame" the ISA for the actions of the Vorlons. He correctly observed that they benefited from it and rightly felt they were owed something. He also concluded, again quite reasonably, that the only solution for the mundane/telepath conflict was segregation. The reason telepaths in B5 are interesting is because the standard elements of prejudice do not apply, yet the some of the same language can be used.
In the U.S., racism partly defines the social dynamic of our people. But the tragedy of racism is that there is no inherent natural difference between people of different races, making prejudice a travesty. But with telepaths, there is such a difference. Unlike racial segregations, non-telepaths not wanting telepaths actually makes sense. It's not necessarily an act of paranoia or hatred, but a matter of self-defense.
A planet of telepaths would therefore be the ONLY equitable solution, as long as that planet welcomes non-human telepaths.
I would also point out that pure pacifism without some kind of cult of personality is virtually impossible. MLK and Ghandi, the two most famous such practitioners, have become worshipped idols, and were so during their lives.
Byron gets shit from the fan base for the same reason Lochley does- they come in at the last season, out of nowhere, at the close of all of the major conflicts of the series. It's like Twin Peaks after they closed the case of Laura Palmer's murder- you think, who are these people and why should I give a damn? In both cases, the story was messed up by factors outside the creators' control. In the case of Twin Peaks, it ruined the show. For B5, it ruined half a season.
In another thread I pretty much lambasted TV as a creative medium and got slammed for it, but this is exactly the kind of crap that makes TV so putrid, generally. Sure, all popular media is subject to this kind of thing, but the nature of the business of TV makes it that much more vulnerable to this kind of crap.