No one is suggesting these pros don't know the rules. Simon is very experienced and I'm sure knows the rules well. But there has to be some reason to call a provisional. That has been my point. They had NO reason to think a provisional needed to be called. They 100% knew they were OB. Except they weren't. Maybe Kyle's case was a bit different, but if you are going to force players to vocalize 'provisional' before every OB throw, then just change the rule.
The wrong questions are being asked here.
The questions aren't "why didn't the spotter know the rule" or "why didn't Kyle call a provisional" or "why isn't there an auto provisional rule for drop zones" or whatever...
it's...
"Why was the line put on the other side of the wall?"
None of these questions are even being asked if the line had been marked properly.
Someone like Steve Dodge, who has run majors and has been voted as TD of the year, shouldn't make this mistake.
I disagree that putting the line outside the wall is a mistake or even it's a question to be explored. I think that is the right idea. The real problem, to me, involves a person being "asked" to be a spotter on a hole and he/she not properly equipped or trained for that specific job.
And it's not "calling a provisional every time a throw is OB"; it's calling one when you don't SEE (for yourself) that you're OB. Any time I proceed to a drop zone before/without seeing where my disc landed, then I call a provisional. I KNOW you've seen people call provisionals when they could see their throw, so I don't think it's too much to ask to have them know to call one when they don't.