Not IMO, flies in the face of the fundamental tenet "play it as it lies." Also randomizes obstacles on a course when the goal should be for the course to be the same for everyone.
*** Sound of an eraser getting rid of the rules for casual water, out of bounds, relief from harmful animals, disc above the playing surface, oh! and definition of playing surface, relief from solid obstacles, drop zones, mandos, and the rule that lets you start your throw from above the ground using another disc (or maybe while touching the thrown disc - not sure exactly how a strict "play it as it lies" would work for a disc on the ground unless we add those Japanese Frisbee-hitting clubs)., allowing some movement of foliage while taking a stance, hazard penalty, provisional throws, lost disc, abandoned throw.***
The point is, while "play it as it lies" is an important tenet of disc golf, it cannot be applied absolutely.
And yes, most of the time a rule that moves away from that principle will be a worse rule. Maybe even in this case. But there are other principles involved.
One is that the round needs to be completed. Somehow, in some fashion. Many of the exceptions above simply let the players continue to play.
The second is that the rules need to be follow-able. If players are subconsciously clearing their run-up, or would never enter another sanctioned event for fear of pine cones or distaste at stand-and-deliver, then the rules need to bend or they will become irrelevant.
Departing from "play it as it lies" is a big negative for a proposed rule. However, it should not cause an automatic veto.
As to the other objection: Would players be willing to replace the casual obstacles they moved? Or, since the other players can also move them, hasn't the course really remained the same for everyone?