i can't tell if this is a joke suggestion, so i will very briefly treat it as a serious one:

getting the machine to do critical thinking will require it to be able to think first. you can't squeeze orange juice from a rock. putting word prediction engines side by side, on top of each other, or ass-to-mouth in some sort of token centipede, isn't going to magically emerge the ability to determine which statements are reasonable and/or true

and if i get five contradictory answers from five LLMs on how to cure my COVID, and i decide to ignore the one telling me to inject bleach into my lungs, that's me using my regular old intelligence to filter bad information, the same way i do when i research questions on the internet the old-fashioned way. the machine didn't get smarter, i just have more bullshit to mentally toss out