Movement without the ball, getting to loose balls, making probing runs, keeping up with runners etc, speed is an asset in all these things. The threat of a speedster getting behind the defense, will make a coach change his whole game plan.
These clubs are likely being approached all the time by prospective players, everyone from Moms vouching for their local sons, to pros on their last legs, to the sons of the Prince of Biafra. Hume is not Pele. He hasn't played in a meaningful league in a while. He hasn't scored regularly in years. He was always a graft > skill player. Always liked the guy, but the CanPL doesn't owe him anything and with his age they're likely not missing anything either. I'd rather see that spot go to someone 15 years his junior.
I'll give you that sure being fast is an asset especially in defense but I was talking more in an offensive context. And of course the foundation of running fast with a ball is being able to run fast so I wasn't trying to suggest being a fast runner is a negative thing
If folks are looking for football related content, I highly recommend a documentary called The Other Final, which documents the lead up, game and aftermath of a match played between Montserrat and Bhutan. Memorable.