no doubt that the many different disciplines involved in MMA have been around forever
i don't know enough about any of them to say "ah, he's switching from a ju jistu stance to a tae kwan do stance", etc.
what i think i understand is that there are so many disciplines involved, that it's possible to be expert level at one but weak at another.. and if your opponent is expert at something you're weak(er) at, you're ####ed and there really isn't a way around it.
then it's a matter of who you match up against and whether or not you/they get lucky, sort of.
not totally different than basketball, football, etc. but harder for me to recognize. which makes it less enjoyable (for me).
the way i think of it is, and i had this conversation on another forum, a fighter can appear to be top level & just lay waste to several opponents in a row if they excel at locking in an arm bar (see; Rousey, Ronda). and MMA fans will just go bananas about how great that fighter is because they keep winning. then the arm bar specialist runs in to someone who has an excellent defense against it and one kick to the head, for which they have no real defense, ends it. and suddenly said fighter is ####.
in a sport like football, where everyone is playing by the same rules and attempting to excel at the same discipline (whether you're great out of breaks, quick off the snap, etc. is one thing but it's not like Antonio Brown is great at getting in and out of his breaks to get open and that can overcome a db who can only shoot the three) there's a really thin margin of difference and that makes it tense and exciting.
the arbitrage of "good at X, not so great at Y" as the reason for victory/defeat is there but with far less variation.
in MMA, it seems, the variation can be massive but it's hard to tell until the thing is over when you realize "Grabkowski is a great wrestler but he can't defend against a boxer". maybe he had a chance if he could have wrestled his opponent to the ground but if he couldn't, game over.
i started watching when Tank Abbott was punching dudes heads off and thought it could be interesting to have a real life Bloodsport with experts in different disciplines fighting each other in even battles but it didn't really work out that way because a bar brawler really couldn't hold up with a guy who jumped on his back and choked him out.
now everyone has to be at least competent at.... everything.. but that's not possible so there's a ton of difference between fighters abilities and that can be the death knell. it's almost like some guys are playing a different sport.. at least at a different level.. so you have D3 guys squaring off against D1 guys and just getting their faces caved in but since there's not a well developed/long established minor-league/proving ground/feeder system, there isn't a way to match them up evenly consistently.
that's stream of consciousness how i feel about it but i haven't been watching regularly in a long time. just kind of checking in here and there and not following the blogs, forums, etc.
for me, i want to watch sport where competitors are evenly matched and in a close, competitive battle.
again, i'm old, and that's what i grew up with so what i like no longer matters. the younger generation enjoys the adrenaline rush of MMA
such is the way of things.