I was United 1k (still am till 1/31). Cancellations and delays happen all the time. Last time it happened to me was early 2019, they couldn't land at our original airport due to snow.
Lots of pissed off passengers all they did was give me a cash coupon and a stay at a hotel, I booked my own because I didn't like the hotel.
It's basically the same no matter where you go.