It’s definitely NOT this, because the vertical (“Z”) adjustment is to insure adhesion on the first layers to the build platform. Based on his photos, there is a raft that looks fine, The parts have broken off the supports.
But I think you may be onto something with the laser. You can see that most of the front parts, have pretty bad looking top surfaces, whereas the further back, they seem to get better. That’s an indication of a laser that’s loosing power.
I would try a different profile, one that has longer exposure times, like the Black v1 or v2. A previous Form 1+ I had had a laser problem, and for a while I was still getting some prints done by doing just that printing grey v2 while using the Black v2 profile.
On a Form 2, he may have to turn on Open Mode to achieve that.