I remember someone mentioning and posting something about survey, won't look for it though.
The thing though? That's not really relevant, because your experiences are still only yours, so you don't get to talk for other teachers, multiple times you keep mentioning your personal anedoctal experiences as if that somehow makes you the authority and judge of this situation, it doesn't.
Also, trying to push everything as some eeeeeevil conspiracy because everyone is out to get SEND children just makes your look silly.
Fact is that unless the child clearly has special needs then it's not the school job to deal with them, parents should potty trained their children, period.
You and others can cry and scream to the heavens all you want, making teachers and school deal with the issue still isn't sustainable.