Is this even a question? Mr beast knows a lot of people have roommates, right? Who have to live with each other much longer than 3 months??
I would do this shit in a heartbeat like god damn. Fuck rich people for making a game out of my life but I'll take literally 25 years of income in exchange for 100 slightly awkward days
You don't live 2400 hours at a stretch with your roommate with zero breaks or outtimes, bro. I doubt you can even live with your SO that long without going out once. Even those in jail get to go out of the room every day.
IIRC there is a popular folk tale about this. A king was exasperated with his princess who got down bad for some peasant, so he locked both of them together in a room for a month and when they came out both of them had nothing but abject hatred towards each other.
I remember an anecdote from The Expanse books. A crew of some ship were stuck in a room in some kind of emergency situation for months. When they were rescued, a handful of them formed lasting marriages, and the rest never spoke to each other again
It seems easy but for the clickbait views mr beast always does some dumb shit to annoy the contestant or make it 10x harder than it needs to be. I'd imagine they will make it hard to sleep/concentrate or some other dumb method to speed the process up.