Yep, and there will be guys here that have made submissions to the regulator. They may even be the same guys that put forward amendments to the manufacturers' publications.
Something I do regularly myself.
Try and get a POH one through though... I am not so sure I have ever succeeded there.
Changing a window is something I have done literally dozens of times. Every time was quick and easy, and iaw the regs and publications.
Nothing difficult there at all.
Far from arguing I thought I had been generous with my time and knowledge here.
I have also seen the job botched on many occasions.
As you say though, many seem to think it is only a cheap piece of acrylic sheet.
When you question some of these guys on how they got it so wrong you invariably discover they didn't even back the drill bit off. I guess it says a lot for the amount of preparation they have put into the task.
There really are guys about with no idea.
I think I suggested having a chat with the LAME as soon as possible. I know I have saved guys hundreds of dollars on the job, almost each and every time.
Surely that can't be too difficult but you do have to wonder.
It seems there will always others about that just know better, - regardless.
Their money.