I have to take issue with this as I did Aikido to blue belt, across a couple of different ryus. I would not say that anyone there ever really advertised it as practical martial art, certainly not something that would be functional for at least a decade. Aikido is very upfront that this shit will not work for you for a long time.
As far as working against the same type of sloppy tackles as the other TMAs demonstrate, I suppose after a lot of practice, it works as well as they do. In fact, I knew bouncers who used Aikido techniques to control passably compliant drunks, and a dude I used to train with put down a would-be purse snatcher with a kokyu nage, then pinned him for the cops. Aikido works. How "well" it works, especially against purpose technique, that's another story, but there are lots of examples where the dumbest crap works in the "real world."
However, ragging on Aikido as ineffective when you have Miyaos and Rafa using the whole berimbolo game, cmon. People STILL sell BJJ as you will win fights, you will dominate in the street, you will be a badass, and all that BS. Look at the people in F12, minds are getting blown out of heads when Roger or Chael say most of what they trained is not useful for MMA. Lots of people want to make bjj "more relevant" for mma, talking about banning this or that technique or position. It's absurd. We have MMA if you want to do MMA. BJJ was never GOOD MMA in the first place! That is the error. It was just better than the other forms of it 20 years ago. A journeyman MMA fighter of today would KTFO Rickson in 30 seconds with as shitty as his posture, punching, and overall standup work was.
BJJ *NEVER* dominated in the street. Numbers and guns did...it was fkin Rio for christ's sake. Luta livre guys were known for carrying guns...ask the guys up your lineages for some stories. BJJ dominated in controlled fights, effectively social status posturing by males, the same as walruses and polar bears and bighorn sheep arbitrate their differences.
As far as "dependency" on the weapon from your earlier post...a professional fighter (aka soldier) has a very different perspective on this. Essentially if you lose this weapon, you are fucked. You may live and you may die, absolutely try to keep fighting, but you fucked up