Actually bisexual, or just trying to over-masc yourself?

So, this isn't a bi bashing post. And I apologize in advance if there are those who take offense to what I may ask, and know that I'm not doing it to start an argument, I'm genuinely interested in knowing what you all think.Lately on Tinder, I'll see these guys who are obviously "masc." with their hunting pics, and references to as many sports terms as possible. Nothing wrong with that, I love hunting and sports. But some guys REALLY over do it with the whole being masculine and "straight acting" thing. They'll use "bro" every sentence. Or they'll demand that you know how to accurately throw a spiral. Etc. And then they'll proceed to talk about pussy, and about how they're actually bi and into guys "sometimes."It's not new, but lately it's been happening a LOT. And I'm wondering: have any of you seen this more than once or twice? Do you think, like these guys are making me wonder, that maybe it's their attempt to be as "masc" as possible while still wanting the D? Or maybe they can't accept that they're gay? Or maybe all of them are just bi and that's the way it is?