Slightly different issue. He was just installing a dogbone insert, not replacing the whole arm. Put the bolt loosely through the subframe and stabilizer arm first, then attach to the engine.
Still relevant due to removal of the main bolt still being required. When replacing the arm itself, the order of install or removal doesn't matter at all. The main point like when installing all things is to keep all the bolts loose until they are all threaded, then torque down evenly (the two smaller bolts that go into the trans require far less torque then the main bolt obviously).
The main point of that thread was don't start the car and move it without the dogbone mount secured, no matter what you are doing to it. To be fair at least 5 were on my own car.
Edit: not an expert, have only installed ~45 dogbone mounts (arms / bushings / inserts or both arms and bushing) on lots of different cars. Volvos are the main culprit.
