Bringing it to high speed gets the rod bushings seated and that is the most critical clearance in that engine. Once up to temp, you are not stressing the rod through excessive piston pinch. Running them hard but wisely is the most beneficial to an ABC two stroke.

The thing with planes and boat engines is that running a plane on the ground allows you to adjust the needles easily. Every boat I've seen was run with a mixture control on the third channel although freewheeling baseline needle settings are used to get it in the water.
With a car/buggy engine, you can freewheel the first startup and take it wide open long enough to get the high speed needle set to a clean two stroke, then toss it on the ground.
This is what I do, but recommending that does not go over too well in the car crowd. It is actually easier on the engine freewheeling it than loading it with driving but it is easier to tune with the audio and visual senses than it is with audio alone and car engines are real easy to get too lean or too rich because of the misconception that temp is used as a mixture indicator.