I'm concerned you're underestimating VoiceofRa.
Consider the worse case scenario: That he is the same handle behind the several antisocial accounts he has been associated with.
He's streaks of valid contributions indicate a degree of sophistication and high function.
The harm he causes, in spite of several attempted interventions in the past that have been unsuccessful, earmarks his malignance.
Most importantly, his persistence in contributing here indicates that he has found a sense of community here.
This issue will not easily be resolved by banning every account he makes, or catching every work around. It will be resolved by helping him resolve the underlying issue: the alleged incompatibility of his style of forum usage with that of the broader community.
Has anyone suggested alternative communities he may prefer, for instance?
Forgotten the sequences so quickly?
"When you surround the enemy Always allow them an escape route. They must see that there is An alternative to death." —Sun Tzu, The Art of War, Cloud Hands edition
"Don't raise the pressure, lower the wall." —Lois McMaster Bujold, Komarr
Worst case scenario, this is only the beginning. Do not make enemies annoying gnat's for they can be a million times more annoying than dragons.
his persistence in contributing here indicates that he has found a sense of community here
Likelier explanation: this is a trolling space too fun for him to abandon.
I've gotten sufficient evidence from support that voiceofra has been doing retributive downvoting. I've banned them without prior notice because I'm not giving them more chances to downvote.
I'm thinking of something like not letting anyone give more than 5 downvotes/week for content which is more than a month old. The numbers and the time period are tentative-- this isn't my ideal rule. This is probably technically possible. However, my impression is that highly specific rules like that are an invitation to gaming the rules.
I would rather just make spiteful down-voting impossible (or maybe make it expensive) rather than trying to find out who's doing it. Admittedly, putting up barriers to downvoting for past comments doesn't solve the problem of people who down-vote everything, but at least people who downvote current material are easier to notice.
Any thoughts about technical solutions to excessive down-voting of past material?