It might have less to do with the color of letters and more to do with the fact that a mod so clearly invested in one side of a debate gives the appearance of partisanship in the way that the forums are administered.
Even if the mod hat is off and no rules are being broken, it's difficult to not see what is being seen.
Being a mod does not mean you're not allowed to partake in discussions.
Also, it does not mean they have to like every part of the game.
Some Mods are Pro PvP, some are Pro Exploration.
Heck, one Mod made an out of game trade tool for people to share trading information to help people buy/sell at the best prices - and some folks consider out of game tools cheating.
(yet not seen any complaints about a mod making and supporting out of game tools)
And if folks really want to complain, how about when when an orange name made it clear they don't PvP ?
I'd say orange names stand out way more than blue - so having a Dev not interested in PvP'ing is a real smack in the teeth isn't it?
Or when some Frontier employees in a live stream burst out laughing when trying to talk about PvP and couldn't treat the topic of PvP in ED seriously?
I mean, Frontier staff finding the topic of PvP too funny to talk about - and where is the outrage Frontier staff think PvP is a joke?
There are much more important things for people to get their knickers in a twist over than Robert not supporting PvP.
I personally think it is just some people ran out of excuses to counter his arguments and moved to personal attacks instead of admitting defeat.
Which shows just how flawed the arguments for open only content were to start with when people have to single out one mod and attack him directly.