How far back do you think user engagement on r/place will stall reddit failing?
Do you think not using the canvas would cause more harm than their favorite event being covered in language shitting on the CEO and making the pretty canvas not marketable?
Personally, I strongly disagree if you do think so. Even if every Lemmy user drove 0 traffic to reddit, it would change very little of their day to day engagement.
It's important in the long term to move away from reddit and reduce engagement of the site, but the cost benefit ratio of fucking up the marketability of r/place strongly outweighs the effect users would have engaging the site.