Mike is right. Take it from me, selling articles to people that aren't about SFV, Smash, or Infrastructure is a very difficult thing to do. On top of that, having somebody writing in depth about it is a bit ahhhhh if they don't know more about it. I can write about a lot of stuff for Red Bull, but MK is probably my weakest area for example, so it's up in the air what meaningful content I can produce.
Doesn't mean it is impossible, I mean I've had two Guilty Gear focused stories go up, and I mentioned not SFV stuff in my CB article. You just have to go through where the money is first, then point to other things that are worth investing in. It's especially a hard sell when you do put out something for a game not SFV related that is huge to a smaller community when that content is dwarfed by a half phoned in SFV piece next week.
Also, complaining about it changes very little, especially on twitter or somewhere. It's a business. You want to change it you can ask for content, sure, but the content does need to be worth making from a business sense side if you're actually putting money into it. It's not entirely a cynical "just chase the views" thing because giving up views for meaningful content happens all the time. Just, gotta give and take. More people from fringe communities should try getting into the writing arena so they can be in the positions to make that content btw. I'm the sole reason Guilty Gear has ever appeared on Red Bull and it's because I cared about smaller games enough to end up in that position in the first place.