Sam,
I suspect you're are referring to me as one of the "scientists".
OP question was "is he the only one?" Many have answered agreeing with him.
What would you want me to say? "Yes, he's the only one"... obviously he's not. Or did you want me to give him a dose of "science"? I only add technical or MSDS info to help others understand my reasoning.
If you and others are happy with "poly on everything" (borrowed from a friend of mine). I'm not going to pipe in and tell you otherwise. That is why I had not commented until you made your statement. If you read my tag carefully, it says it is ACTUALLY A PROCCESS. As Bob W. says "a learned skill". Personally and professionally I strive to use the best finish for the given project... I is my belief that poly is not the best of all, for all, in all cases and projects... I do use poly for floors and stairs. I even used it on an oak toy box for my 4 sons about 20 years ago.
Scott
Finishing is an 'Art & a Science'. Actually, it is a process. You must understand the properties and tendencies of the finish you are using. You must know the proper steps and techniques, then you must execute them properly.