fva_: In the past, it might have been easier for GOG to overlook the misuse of the reputation system because users were partially responsible. But now that downvoting is officially disabled, there are no excuses. It is necessarily GOG's fault that users are being targeted due to a hole in its system. So, if GOG's moral isn't too flexible, we have a chance to get a fix.
You are making an assumption there.
In truth, we don't know who is doing the downvoting. It could be one person, could be a group, could be many, could be some kind of corporation, trying to sow dissatisfaction with GOG or who just like to sow disharmony for childish kicks. It could be connected to the spam we get here or not.
All it takes is a simple script, that is based on user ID or name. You might even be able to target everyone in a thread, as many of us have certainly seen and experienced. You could also use a script to trawl the forum sections. It wouldn't be hard to do that for those who know how.
GOG I suspect, were hoping that if the botters could not see the result of their downvoting, that they would give up, but alas that appears to not be true.
GOG have had plenty of time, to really address the issue, but haven't despite all the complaints I am sure they still continually get. Of course they get those complaints, because users themselves can still see their rep going down.
GOG, at least to me, have just brushed the downvoting off as not being important, not really having any impact on anyone.
Many of us have suspicions that GOG might use the issue to eventually shut the forums down one day.