I am not so sure what is huge about the upside, or how large the contingent is that is actively unhappy on an ongoing basis enough for it to mean something to WOTC's bottom line, or even aware of this issue (a substantial majority of people don't use Twitter on a regular basis in fact). I strongly suspect this isn't even a measurable blip in sales.
That's not to dismiss concerns. It's merely to call into question your characterizations of hugeness and largeness relative to the fanbase.
Sure. Any location - whether big like Twitter or small like here - is just a potential sparking point for a bigger effect. Usually it isn’t, but sometimes something happens, and careers end and brands get damaged. One guy at a company staying quiet for a bit is prudent.l, lest it escalate (which it probably wouldn’t, but it’s not a risk worth taking).