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Rockstar Games DDoSed Heavily By Players Protesting New AntiCheat Code
(cyberinsider.com)
This is a most excellent place for technology news and articles.
But I don't believe at the scale of thousands of players for >1 year.
Remember, they are (supposedly) offering it even if you played a 100 hundred hours. I don't think that comes only from Valve. They'd burn bridges with publishers should they deduct it from their pay as a "You rugpulled our user base. We are now offering refunds if requested and will take it from your cut as compensation".