Well where was your evidence? You can't provide anything more sound than mine, so we're both just giving our opinion.
"Consumers don't care about the insides of machines"? You're telling me if PS5 is just a reskinned Pro that costs $399, that people will be ok with that, just because of the price? Then why would SNY or MS bother making newer more capable hardware?
Consumers are part of the formula, but if what they are willing to pay isn't enough, the product fails and/or ceases to exist. Either that or they have to wait for prices to fall. That's how it works.
Hystorical data says hello.
I'm ignoring the pointless example that followed. But do remember that one of the most successful consoles ever was a reskinned gamecube.