I don't have a dog in this fight and I wasn't there for any of the tirade referenced in this post. However, several things you may want to consider:
1. The temporary loss of vox/text comes from the moderators who may be on and catch the abusive language text. (Is this correct?) As a result, the other offending party may also have been silenced also but you just don't know about his/her issued punishment.
2. One also may consider that the emails and report messages may not have gone unnoticed, but due to the holiday, no one was present to read them (yet). It may be that HTC will receive the information upon the open of business today, review the material and take appropriate action.
Again, I do have a dog in this fight and am not defending or condoning any particular behavior. If the offending tirade is what it has been made out to be, I absolutely agree that some punitive measure should be issued. The main point I would suggest is that even though the response from HTC is not immediate, that doesn't mean it isn't or won't be addressed. Additionally, I might also suggest that in the event HTC does or did issue some form of admonishment, I doubt they will (in the interests of good business and privacy) inform the community/public as to what steps were taken. It may have just been addressed privately and quietly with the offender in question.