"Actions speak louder than words" is an expression used when someone says one thing and does another thing. That's not what's occurring here. When someone says "We're going to focus on non-gaming stuff, big system vision stuff at this conference, and save our game stuff for E3" and then does a conference where they focus on non-gaming stuff and big system vision stuff and says they're saving their game stuff for E3, and then they do a follow-up interview where they say "We were focusing on non-gaming stuff and big system vision stuff and we're saving our game stuff for E3"... it's not really an applicable expression.
By all means, call it a bad reveal. And by all means, if they don't announce games at E3 then you're more than correct and attack them then.
But, like, imagine Apple sets up a press conference and they call it the iPad press conference and they say "We're announcing the new iPad. We're having a conference a month from now to discuss iOS and Mac stuff" and then they have a conference where they announce the new iPad and don't discuss iOS and Mac stuff... would the most logical reaction be to claim they're not planning on discussing iOS and Mac stuff ever, nothing is coming down the pipeline, it's all just a ruse, etc etc?
Note that I'm not arguing that it was a good reveal or a good strategy or anything like that (obviously at least among the gaming press and consumers, this was not a strategy that lead to any excitement or goodwill, that's obvious), and honestly Microsoft's first-party development hasn't historically been that great so I'm not really all that excited for their E3 announcements. I'm just saying there's a pretty logical A->B->C progression here that people seem to be deliberately ignoring. It's possible to dislike something or disagree with something without needing to attack it on every single point.