Two guys walk into a post

I didn't watch all of it. There were some good scenes but they dragged the show out way too long and shot themselves in the foot by having the ending pre-recorded

The actually done that?? That's such a dumb idea to do for a TV show

Well the show started with an interview with the two kids talking to their dad (Ted). So they pre-recorded the end so the kids wouldn't age out of the next part iirc (though they could easily have just had the camera focus on Ted or made it a joke about how long it had taken to tell the story).
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Instead they then had to fuck over a bunch of storylines to fit into the weird mold this pre-recorded ending demanded and it was, at least from what I'd seen of the show and the end, complete cringey shit

That's terrible story writing right there

Lost did the same thing, so apparently you're right

I enjoyed lost until a certain point

The beginning was fine
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And I should clarify: lost didn't record the end ahead of time, they just had it planned out and then the show was successful so they were told to drag it out with more and more insanity to make money. So they did. until it didn't matter that th end was planned out because everything leading up to it was so ludicrous