Twotrunks, of course there are teachers out there who don't deserve their title. To suggest otherwise would be nonsense.
For the record, I have wiped noses, tied soggy laces, cleaned up explosive poo, scrubbed vomit off the floor and held the hands of little people whom I knew to be nose pickers.
I've done it, but should it be a general expectation? Why don't teachers deserve to set boundaries? I educate children and ensure that while they are in my care they are happy and safe. This does not mean that I am obliged to treat each child as if they are my own. There has to be a limit on what teachers are expected to do and I don't think it's unreasonable for a teacher to say I don't tie laces or wipe noses.
I know as a Prep teacher, there is an unspoken expectation that physical comfort is something you provide when a child is upset. Fortunately, I give cuddles quite readily. I worked alongside a teacher who did not like cuddling children. After an incident at a sports day one year, I overheard a few parents comment on her 'coldness' and they concluded that she wasn't Prep teacher material. Wowsers. Nevermind that she was the best early literacy and numeracy teacher I had ever worked with but she was caned for her inability to cuddle?
By suggesting that you'd remove your child from the care of a teacher who refused to wipe a nose or tie a shoelace, you reduce the profession to basic babysitting.