No screen tearing never. My laptop saw a significant battery life boost (basicly doubled) when I switched DWM into DWL but I don't know exactly why.
And because Wayland is the future and xorg decrepatec, why you'd recommend xorg for anybody since they must swtich at some point and I doubt even the most basic user can make that transition 100% flawlessly.
Lack of screen tearing is a good point if it makes a difference on that person's hardware.
My thought wasn't so much about recommending xorg (or not), more about whether the user would even be aware what that meant, or care at the point when they start using Linux. Kind of like launching straight into a flame war about systemd. In theory they (or their distro) should be able to switch the backend without the user noticing