I have seen reports about revision 1.2 having issues, too and people who bought certified DP cables
reported that the issue re-appeared, in this very thread.
Technically it does make sense for Gigabyte to not care, too because after all they got your money
already and any repair or replacement would cost them. The calculation would be different if this was a widespread
issue which would lead to bad press.
So as a customer all you can do is simply not throwing good money after bad.
Youtubers and the like probably won't raise the issue, too because this isn't some mass
product with several hundred thousand customers being affected.
Personally I'll just sell it on eBay as defective with a honest description of the issue,
recover some money from it and never look back. I do acknowledge that other
manufacturers have their issues, too but one needs to get burned to really
care so I'll just avoid Gigabyte in the future. Quite a shame because in the past
I was very happy with them.
I have to disagree with the "makes sense Gigabyte not to care". Precisely because there are not that many people having the issue (not sure about that though), it would make sense for Gigabyte to replace the boards, to keep those customers happy as it wouldn't cost them that much (since the percentage is low right?). Now, not only I won't be buying a Gigabyte product again but I'll spread the word as much as I can so that people are aware when asking for opinions (on buying a motherboard, to be fair). So, IMHO that's not a good tactic they're following.
As a consumer, having paid a premium (418 EUR) to get a defective unit is simply put, unacceptable. I had a few friends over at my place the other day and when I tried to power on the PC and it wouldn't, I had to explain to them what's going on (I have to remove the GPU, then reinsert the battery and so on). Guess the reaction? That subtle smile that says "The idiot paid a fortunate to have to do that in order to power on the PC".