And if a video game site were to do this, how long do you think it would take for people to complain that they're not talking about games? There are places where that sort of call to action is better placed.
Totally agree. There are better places to discuss the Orlando shooting. But, you see, that won't get these sites the clicks. The clicks, man.
The fact that there have been plenty of mass shootings in the US by non-Muslims does rather undermine your argument that Islam is the only real factor behind this one, as does the fact that Islamic terror attacks in Europe have required much greater organisation and support than one guy heading to the gun shop.
You're saying that because other people did things for other reasons, that should mean this guy totally didn't have his religious dogma telling him he should hate himself and every other gay people and, say, kill them?
How much more of obviousnessness do you require as a criteria before saying that X is a culprit of a certain event?
If your position is rather that in the US, americans have to deal with a lot more of this that does not imply religion, or at least islam, and that therefore a search for an underlying platform they could try to solve is warranted, then that makes a whole more sense.
But I have addressed this. The availability of the gun issue is a shady angle to tackle. Unless you're going to say that everyone who the government deems "dangerous" can't buy guns (and that may well mean whomever they want, for whatever they are saying, thus undermining both the first and the second amendments), then this position, no matter how philosophically sound, it's pragmatically worthless.