I think spawn parkour can be relaxing as you are just jumping from block to block, but after a while it gets kind of boring. I mainly play it if I am bored and have nothing better to do or I am trying to get better consistency with jumping.
However, I definitely prefer normal parkour maps as they are a lot more fun and have more jump variety.
I am still a long way from jumper but recently I fell at 678 jumps. I am very proud of that. I have no idea how people get 1000 jumps in spawn pk. Its so much consistency its insane.