Here are a few sentences I found on a site dedicated to grammar:
Can you split an infinitive?
Can you end a sentence with a proposition?
Can you start a sentence with a conjunction?
I'm wondering why "can" is used instead of "may." It's obvious that one "can" do all those things, i.e., it is possible to split an infinitive, to end a sentence with a proposition and to start a sentence with a conjunction. But the question is whether it is permissible under the rules of grammar, and therefore "may" should be used. Am I wrong?
May you split an infinitive? = Are you allowed to split an infinitve? -> Makes no sense
"Are you allowed to split an infinitive?" does make sense, given that we're talking about prescriptive grammar.
I wouldn't say "May you ... " or "May one ..." although the latter is grammatically correct.
"May you split an infinitive" sounds like a wish for someone: May you live a long life and split many infinitives.