I think you might reflect on why your position has created such a reaction.
In essence you are stating that a fret hand thumb anywhere other than on the back of the neck is a signifier of poor technique and a lack of skill.
Yet many people accepted as among the most skilled do this.
Most move their thumb location according to what they are playing, which among other things, reduces fatigue and strain.
Your view, or at least how you present it, comes across as elitism at best and petty one-upmanship at worst.
Of course, given your avoidance of directly countering the more considered objections to your position, it is more than likely you are trolling and laughing you head off at the fluster you have caused.
But thank you for getting us to consider what we do and why.
Now I'm off to put my thumb where it belongs (is that on the end of my nose or up my bum, you ask...)