In many decades of bike maintenance I have NEVER seen (in print or IRL) a mechanic EVER using the Merziac Two-Wrench method . . . tres bizarre !

On older bikes I've seen a number of times where the mounting bolt was removed, but the little washer was left in the arm. That leads to the remover threads being stripped when using the puller.
Newer bikes usually have the one-piece 8mm hex bolts that don't have those washers.

I have about half dozen pullers, but my favorite is an inexpensive Lifu from around 25 years ago.