How are people struggling to live on 100k a year?

I live just outside of Vancouver BC, one of the more expensive places in Canada. I make around $7Ok a year, and l'm doing fine. I live fairly frugal, but still buy healthy food, spend money on my hobbies, and travel once a year.

I see single people on Reddit all the time complain that they struggle or live pay check to pay check on 100k. How is this possible? I understand that 100k is not what is used to be but it's still a decent amount to live comfortably, even in a more expensive place.