I love this thread, however I have some sympathy. Typing and social media need for speedy response leads to mistakes and wierd errors.
a) I seem to have tyeplexia, where I get my letters mixed up, I never do this when writing by hand. I also put spaces in the wrong places. It is a wierd thing about timing between left and right hand I think.
b) I also type won instead of one and there instead of their etc, but never ever do this when writing. I think this is to do with not being a very good typist so I am looking at the keyboard and not the screen.
However peddle, breaks and all the others, I think show a lack of reading. According to my daughters primary teacher, who did a PHD in how kids read, reading books helps to cement spelling, and teach new words. So peddle, breaks, axel etc are probably people who are less well read and have only heard these words in the playground etc.
This is forgivable as it means that somewhere along the line the system/parents/skool failed them.