Where are the lies? Sony advertised it as a revealfor the PS5's system architecture. That says nothing about this being a dry technical talk that is primarily meant for developers. I gave the example of Digital Foundry's video which does very much the same thing but with actual tech demos, gameplay footage (albeit not of XBSX games), etc.
Also there are three other points there. Did Sony not do a countdown and Youtube premiere? Did they not know about what Microsoft has been doing (e.g. the Digital Foundry partnerships, the quick tech demos, the flashy reveal trailer, etc)? Did they actually say this wasn't for consumers in the tweet?
If your argument relies on everyone else being an idiot if they don't see what you, as someone with a bunch more contextual knowledge, see then your argument is incredibly flimsy. Maybe realise that people aren't simply idiots and that, perhaps, they simply don't know what you know and that it's up to Sony, not themselves, to manage expectations.
Or maybe the Old-People Mahjong Club shouldn't have mislead people into thinking that they were hosting a party.