http://fetch.spec.whatwg.org/#requests

[[
Fetch end points must enforce restrictions on a request's method and author headers. 
]]

It's very unclear what this is supposed to mean. Presumably it's a requirement on algorithms (in specs) that call fetch. However calling these "fetch end points" is very confusing because an "end point" is already a term of art in HTTP-based services and refers to something on the server side. You should create a new term and clearly define it so that it's obvious what the intention here is.