I've been quietly following the saga of him telling everyone to buy now and other tech youtubers disagreeing and now this follow up video along with the tweets and reactions and other comments of everyone else in between.
He is correct in saying as long as Nvidia existed as a company, they have never allowed themselves to sell any product at a loss.
They chose to burn the relationship they had with Apple rather than take partial financial responsibility for the failing graphics chips in Macbook Pros. That's when AMD stepped in and took their place and that's also when Apple decided they cannot rely upon third party vendors indefinitely and now years later we have M1/M2 chips. This whole timeline where Nvidia ended up being cut out of the largest computing segment (Apple laptops) is more preferable to them than saying "Sorry about the faulty chips, we'll take a 50% cut on the next batch" (hypothetical %) — they haven't ever expressed regret or revisited this decision in any shareholder earning's related call as far as I know.
So yeah, it's entirely possible we won't see a full 4000 series rollout for up to a year. Nvidia is not going to flood the market with new hardware when the old hardware remains unsold. The recent price drops on the top end has been uncharacteristic — when did we ever see a price drop on an Nvidia GPU? They just went out of stock at their old prices.
His point about not buying used gpu's is somewhat moral/ethics based (why would you monetarily reward the people who created the difficult situation that we're all in) but it's also important to consider the type of person who is selling GPU's in this market. They're not seasoned, experienced miners who have seen a fair share of highs and lows. They're people who got in the mining craze, expected a super quick ROI and are now bailing out. From what I've seen, these people either don't care or don't know how mining is properly done (undervolt, underclock). They'll boast about how many hashes they squeezed out of a rig and it is in those scenarios where memory degradation happens. Not in the controlled environment that other tech youtubers use to "debunk" this theory.
Even though he himself doesn't mine or allow his GPU's to be mined on, his staff are pretty enthusiastic miners. They mine on their personal rigs and their work rigs, just not on testing GPU's. Same with LTT by the way, those workstations are never turned off or allowed to sleep, they are always mining when not in actual use. So it's fair to say he knows what he's saying about memory degradation.
Some people are saying Nvidia won't remain silent with AMD's upcoming launch. What if AMD delays their launch for the same reason? They're out for profits too, as we've seen with their 4GB and x4 cards. It's possible they'll just sit on the new cards until they have a reason to announce them (competition from Nvidia).
Still, we are living in the weirdest and most unfathomable timeline humanity has ever seen so I guess at least it's an interesting one.