Idiot google trolls...

so I encountered a bug in Hangouts and posted it in the support forum:

https://support.google.com/fi/thread/3819129

Discovered some additional information to share and wrote the following post:

Further observations:
if you type in a number and that number is in your contacts, it's happy.
if you type in a number and that number has been used before in hangouts, it's happy.  (case in point, I deleted the conversation for the number I was sending to, typed in the number for a new SMS, the number was not in contacts and not in history, but it was happy with it (even though the 1st time it ever saw that number it complained).
I tried a different number (known VZW mobile #), not in contacts, not in conversation history, and never used before and I got the unsupported SMS error. 
Seems to be a real problem.  Work around is to create a contact for the number otherwise hangouts will reject it even though it's a valid number.

Then, when trying to post, I get this error:

Great, what the heck in that text violated the "community policy"???

Furthermore, since the error display does not identify the terms that were in violation, there is no way to modify it to comply!

I posted it anyway by taking a screen shot of the post and posting that with a few innocuous words of explanation.