I think one thing has to be mentioned.
Sony is the market leader and therefore wants to appeal to everyone.
They want parents to buy a PS5 for their kids. Or show parents who want a PS5 that this a good investment because it also has a lot of kid friendly games.
So do expect to see "kids" games. Expect to see games that are a bit "out there". Games with mass a niche appeal. Its not gonna be 40 minutes of GoW, HZD, Silent Hill, Spiderman, GT7 and so on. Not every game shown will appeal to YOU. In fact there might only be one or two games that will appeal to YOU in particular. Out of maybe 15 games. Remember that.
You are not the only video game playing human on earth and your taste is NOT universal. Sony will try to appeal to as many folks as possible and with launch line ups being rather small, that means only very few games will cater to ones specific taste.
Also do not forget that most games are about 3 months or more behind schedule because of Covid. So even if there were rumors about certain games it does not mean they are ready for a showing just yet. Showing of a vertical slice like the E3 presentation of HZD or GoW takes weeks (!!!) of work. If you have to decide between working on that vertical slice or getting the game out earlier and make money it will always be getting the game out. So maybe they cant show good gameplay of games they intended to show and it will just be some pre render or logo reveal or dev interview. Its probably what happened to some of the stuff from the xbox showing.
I can not stress enough how important it is to accept these things so I wont have to read about "how fucking disappointing" it was. Its only a disappointment if you set yourself up for it.
Despite a lot of rumors I still only expect Spiderman as AAA on release, plus maybe some AA stuff (Little big Planet or Bugsnax or whatever). The rest will be filled with 3rd party timed exclusives or exclusive content that probably no one asked for. Everything else probably comes later.
That is the mindset I have set for myself. End of the year is still going to be great with Mafia Remake, Cyberpunk and Spiderman. Maybe some cool indy game like 12 hours.