MLID has been BADLY wrong so many times it's hardly even worth discussing. Remember the $150-$200 "RDNA Leak" back in December 2019? Laughable, but he went with it. The cards launched at $400 (after being dropped $50 at the last minute). When you fire multiple shotgun blasts at a target, you'll inevitably get a few hits, but YouTube is notoriously bad at increasing the amount of fake news and speculation.
Yes, Nvidia is going from what is effectively 10nm class Samsung to 5nm class TSMC. That will help a lot. But most likely Nvidia will use the shrink to create smaller chips that are 50% faster than the previous generation at best. And it still needs to increase memory bandwidth a similar amount to scale that much. More than a 256-bit interface is costly, and 384-bit is basically the limit, which means there's a good chance memory bandwidth only increases a bit while GPU compute increases more.
But again, the real problem is that the cost of TSMC N5 is going to be more than double the cost per square millimeter of Samsung 8N. So even if Nvidia wants to do a big 600+ mm^2 chip like GA102, and even if it could feed it with enough memory bandwidth, it will end up being way more expensive than a 3090. So Nvidia will balance performance increases with die size and cost, and probably go after something that performance 20-30% better than a 3080 with a theoretical price of maybe $999 and a die size closer to 400mm^2. Hopper will still get a massive chip, but that's because Hopper will only go into supercomputers and maybe workstations and those can handle the $15,000 price tag.
Sure, he got some things wrong, but he also gets a lot of them right. Price is the easiest one to get wrong and more so these days, so I don't diss the guy because of that.
It's not like Coreteks and all the press media (including this site) that believed RDNA2 will be 2080Ti level and were wrong, while in the mean time MLiD always said to expect at least 3080 performance and we got actually 3090 performance.
I don't really want to continue a debate now on how many times he was wrong and how many times he was right. The fact is he's getting better and better and has more reliable sources now, than in 2019.
About Lovelace and RDNA3: if nvidia does not push to the absolute limits both the size of the chips, the core speeds, IPC and everything else in between, they will lose badly to RDNA3 which can scale higher much easier since it's MCM. That's why we got a 450W 3090 Ti now, because nvidia not only does not like to lose, they don't like even parity - they (as in, Jensen more exactly) "need" to beat the opponent at every metric possible.
This is the same reason why after a 450W 3090 Ti which is a psychological move too, so we get used to even higher power usage, we should not complain when Lovelace will come with 550W or more power usage to fight with their monolithic design an MCM RDNA3 with lower power draw. Although the top RDNA3 chips will also have a higher power draw than RDNA2, maybe 450W, but still lower than what Lovelace will require - and still nvidia will lose vs RDNA3, at least in raster.
Depending on how hard nvidia pushes everything on that monolithic chip will be the case of losing badly or not so bad vs RDNA3.
As for prices, expect even higher ones across the board and who ever wins the next gen GPU war, will ask at least $2000 MSRP if not more for the top halo GPU and we can expect real prices even higher in shops.