Honestly, the fact that there's so much stuff, that is apparently open to interpretation, shows they didn't do their job right. If they wanted to write SH as poly they should have foreshadowed, and they should have done so in a clear way that can't be confused as something else.
If you're very important information, that requires foreshadowing to be believed by everyone, is "open to interpretation" or is "shown offscreen" then it's blatantly shitty writing.
