Gamers Nexus investigated the matter and did not find evidence of something being amiss with the GPUs of the memory. The site talked to its trusted sources at board partners and got to hear that RMA requests are not higher than normal. In fact, they're actually exceptionally low right now:
Talking to all of our board partner contacts off-record, none of them have reported higher RMA requests than normally. We trust our contacts on these and spoke with nearly everyone in the market. The most common RMA reasons haven’t changed from previous generations, and actual RMA rate is exceptionally low right now. Some board partners are at under 0.01%, which is just because these devices are so new that no one has even had a chance to encounter serious problems yet.Gamers Nexus is requesting users with dead GeForce RTX 2080 Tis to give them on loan, so they can further analyze the matter.
The problem seems to me somewhat concentrated to FE RTX 2080 Ti models, but there have been users with Gigabyte and ASUS cards who have come forward with similar issues.
Speaking with two of our SI contacts, we heard similar responses: Neither company has seen abnormal RMAs for these devices.