My fear is that long term these CPU's will warp and crack the solder between the die and the IHS, making them impossible to cool or outright impossible to even run at stock speeds over time
Impossible! The genius of the 12th gen processors is that they re-melt the solder every time they're run. The solder can't crack if it's always being reflowed!
LOL! Spending so much on an 'elite' CPU, only to find out it needs ghetto mods to stay in place... Bravo, intel, bravo!
LOL! Being so obsessed with criticising a company that you literally make up the most absurd and obvious nonsense and then convince yourself it's actually true. Bravo, zlobby, bravo!
This thing has absolutely nothing to do with keeping the processor in place. And the issue itself has very little to do with Intel specifically. It's more an issue of motherboard/backplane design insufficient for the clamping force of the retention mechanism. Intel can't possible be expected to machine specific IHS profiles based on how much each individual motherboard/backplane combination might allow the processor to bend ever so slightly.
Furthermore, if you watch Buildzoid's video, which originated the "washer mod", he stated that most people don't need to do the mod at all since most water blocks/heatsinks are manufactured with a slightly raised center to their cold plates to match the mounted processor's IHS. Because he had moved his water block between so many processors, and removed the liquid metal residue each time by lapping, his cold plate had become totally flat.