It's a fictional universe full of bathrobed space wizards.
They weren't clever enough to realize being sexless monks was a bad fucking idea, either.
There are lots of weapons that have lots of optional safety features that lots of people choose not to implement themselves. There are styles of swords that DON'T HAVE CROSSGUARDS here on Planet Earth. People used (and still use) them.
Are you telling me your capacity for imagination is so limited that you can't even conceive of the possibility someone might come up with an in-story reason to justify the variation on the laser-sword that you've never seen before?
It's a Star Wars movie, for fuck's sake. Internal logical consistency with regard to the world-building's never really been a thing.
Fuck, Artoo-Detoo never had rocket legs till suddenly he had rocket legs.
Who fuckin' cares.
This is funny considering being sexless monks worked for them for millenia and would have prevented Anakin's turn had he been more chaste and devoted to the order rather than his own desires.
Also funny is how you continually fail to address in all your stammering the fact that the guard wouldn't even work as a guard with the hilt unprotected.
And then you end your argument by saying Star Wars is above critical analysis and logical consistency. If that were true, the prequels would be substantially more beloved and we wouldn't have had people moaning over crap like midiclorians a page or two ago. Plenty of people bemoaned R2's rockets as well, by the way, but screw logical consistency, those people are just haters who can't successfully turn their brains off like you can.
Look. I'm not saying they can't come up with an explanation why there's suddenly a lightsaber with a cross guard. I'm saying, at this point in time, with the little we know, it posses a problematic contradiction with the movies that came before it. You can choose to ignore it, and I couldn't care less that that's what you're doing, but getting so ruffled over other people noticing this inconsistency is asinine. You might as well get mad at people for disliking midiclorians. There's no obvious answer as to why a sith or a jedi would suddenly need the utility of a cross guard when no force user has been shown to need one in the past. It's like putting a seatbelt on a bike. You can try to pull an argument out of your ass why a bike might have one but all evidence points to its inclusion being unnecessary.
And again, I feel I have to repeat myself over and over again with you so you can finally get it, I'm not saying they can't hamfist some reason in there. Maybe it really is just for aesthetics and not function, which would be fine since this thing
wouldn't work as a saber crossguard anyway. Maybe it's a proto-type. Maybe the entire hilt is made of mandalorian iron. Maybe it's an old design that fell out of favor thousands of years ago because jedi obviously don't need guards that the character found or dug up or recreated. There's nothing wrong about being critical and adopting a wait and see approach. And like I said, one more time here for your sake, I don't give two shits if you don't care about logical consistency, enjoy star wars however you like, but there are plenty of people out there who
are interested in their movies making sense. Calling people nerds and saying "who fucking cares" just because some might have the audacity to enjoy movies differently than you do is absurdly ludicrous.