There is fun to be had with Mario Party if you have three other friends and some pizzas. But 50 turns is absolutely insane. MP9 and 10 have a different format, but these guys have played at least 400 turns of Mario Party throughout all the games. That is enough to break even the most hardened soul.
Because 4's board design and items are blech. 1 has really good boards (that are prime for dicking over everyone else) on top of being able to turn on random dice blocks like warp blocks, 1-3 dice blocks, 8-10, minus and plus blocks, boo/koopa/bowser block, etc etc. More RNG on top of the already punishing stuff 1 does is great.
It's an End of Evangelion reference. https://youtu.be/aK8HuCioIkE end of Eva spoilers
Basically it's the happy song with depressing lyrics that plays during the end of the world in typical Eva mindfuckery.
Mario Party is a series I always assume is going to die out from its sheer mediocrity or straight up terrible iterations, until I remind myself that a good chunk of people still buy them religiously for whatever reason.