I don't really understand where the expectation comes from.
Since day one we have not acknowledged every report.
I would have assumed that by now everyone would have caught on to the general process.
Members report posts
I'd say usually within a day or two said report gets acted upon. Sure, that can sometimes take longer depending on the backlog, but rarely more than a week.

If the report results in a warning/ban, the reporter is typically notified that the member in question has been warned/banned.
If the report is rejected, we generally do not explain ourselves, only in very rare instances would we go back to the reporter and explain why said post was not acted upon.
It is relatively safe to assume if you hear nothing back, we discarded your report for whatever reason.
In an ideal world, maybe it would be nice if we sent a rejection alert every time too, however as of now that really isn't feasible. We'd have to step on egg-shells with every acknowledgement pointing out the minutiae, as to why a certain post doesn't need moderation in our humble opinion. Not to mention, that we take ban/posting history into account and articulating all that in a concise acknowledgement seems implausible. And we all know that every word would be taken apart and dissected which would just lead to pedantic back and forth.
As for the rules not being updated. Rest assured, that work is ongoing.
If only it was as easy as just adding "hogwarts and c*nt are now banned, peace out!"
To be perfectly honest, personally I don't see the big deal myself. E.g. the c*nt thing was announced here, and within 15 min everyone in footy era, Aussi Era, UK Era, etc. was aware of it and ready to get out their pitchforks and complain about their civil rights been trampled... I know when I was just a humble member, I never read the rules and would have never known about any changes to them either... It really shouldn't be too hard not to get banned. Does this mean that some people might get caught off guard and unexpectedly banned? Sure, and if they submit a sincere report their chances are good that we will be lenient and rescind the ban. If they come in hot and throw a tantrum, then, maybe they get to enjoy their full length vacation off the site... ¯\_(ツ)_/¯
But again, regardless, the rules are being updated by some brave souls on staff as we speak so to say. Yours truly not being one of them.