In all the meeting I've attended, the questions he's posing never come up. It's not a issue.

They say that "teaching" is one of the best ways to learn. That's because students ask questions and ensure that we do not get entrenched in "emperor's clothes" positions that are simply habits, not logical conclusions. The smartest students made my job more challenging by always asking "why" and forcing me to justify myself. One of them ended up a multi-millionaire by questioning the physics behind a certain cardiac device and designing his own better version.

The key point here is that the proponents of SP seem unable to mount a reasoned argument in defence of their claims.

All the ad hominam attacks and flurries of distraction are as nothing compared to that.

Can you please mount an ordered, logical defence of SP so people like me don't have to step in and point out where SP can be useful?

Here's a start: it has been said that SP make sense for large volume repetitive inserts- I've said it myself. Do you agree? If so, why- what are the characteristics of a SP that make it better for batch entry? For this to work you have to expect that people may challenge your statements, so you need to make sure the statements are valid.