Some very interesting discussions here. In my opinion MK11 checks all the boxes of a good fighting game.
In regards to the 50/50s there are only a few overhead low type mixups and most of them have a safe option, and an unsafe option. It's up to you as a player to gauge the opponents risk/reward style gameplay and then make a decision accordingly. The knockdown game is a typical oki situation you'd find in any fighting game. Will they wake up? Will they press a button or will they jump? Again understanding your opponents options and making a decision on what to commit too. So Lets change this statement from 50/50s to The fact that you actually have to think and make reads.
There is a lot of great space control that can happen in this game. Lots of characters have good ranged attacks that can help them close distance and whiff punish. The krushing blow system is fantastic(although unbalanced a bit atm imo) as it rewards you for doing good gameplay things such as whiff punishing, kountering and making solid reads.
Now I am gonna make a read here and say that your salty comment is somewhat telling of your skill level, and since online does have a fairly decent matchmaking system now that matches you up with similar skill levels that is why your wife was able to mash buttons and win because she was playing an opponent that was on that same skill level as you/her. unless you were in an online room in which you may have also been playing a 9 year old.
In closing MK11 is a fantastic fighting game but you are entitled to your opinion, its just wrong. Not every game is for everyone, there have been many fantastic games that I have not enjoyed but that does not make it bad. Finding a good group of people to train with and play with instead of dealing with online players who can be toxic at times is a crucial part of enjoying this game and community more. That would be my reccomendation.