If you don't want to get labelled as hate, you should take out the phrases that ascribe motivations to others. For example:
> the developers are presumably obsessed about a
> specific choice made in the early 1980s by someone at Apple
Sounds pretty unlikely to be true.
> collaborated properly (as promised)
Sounds like you're saying you know exactly what the issues are here better than the developers and are implying that "the developers" (not a monolith; this is open source) broke a promise to you (I doubt there was some sort of promise to implement webdav to your satisfaction).
> simple scripts that wrap stuff like wget
This makes it clear to developers that you have no idea what's involved.
> menu-stealing masquerading as innovation
You're implying that the developers are trying to impress you with BS "innovation" claims, rather than making what they think is the best decision.
In short you do not know what the issues are here, but you're telling other people they are incompetent jerks with evil motivations. That's why you get labelled as hate.
It would suffice to say "I wish webdav worked in Nautilus and interoperated with KDE, here's what I try to do that doesn't work" (if it isn't there already, saying it in a bug tracker would be ideal).