While time is finite and valuable, if I am already on YouTube, then I have already committed to choice of wasting that nebulous amount of time in the first place.
As much as youtube can waste time, I also feel like I’ve been given genuine value by certain people on the site, so I wouldn’t say it’s simply wasting time.
If one's patreon did have perks associated with it, then I would be more inclined to 'donate', as well.