I think people underestimate how liked E3 actually was, and how disorienting this new non-E3 life is (edit: gaming life, I mean..that'd be odd). There are events galore, left and right, and all of them suck. Instead of one week where we get some pretty solid news, cool reveals, awesome booths, we now get these awkward nothing-burger digital events like Sonic Central, because everyone thinks they have to hold a digital event. E3 was a good way to bring together people who didn't have that much news to share but could bring demos for their one game (I mean...that includes Nintendo at one point). In 2020 and 2022, having no E3 has been a complete disaster. Everyone has been complaining about how the events are going. And then when ESA says "they'll be back", it appears most people whine and say "is it needed?"
Yes, yes it absolutely is. Look around you and read the room--nobody has enjoyed this awkward need for every tiny company to have a presentation, not to mention these Youtubers who are coming up with their own "gamefests" which have been just abysmal. E3 was a collective way for every single one of us to come together and enjoy gaming. We could all collectively discuss every minute detail and reveal together. Most of us don't have the time to watch these semi-spread out 100 digital presentations. It's much, much easier for us as adults to have a set schedule where we know what we can and cannot watch, and can even plan around something if we really, really want to see it live.
I guarantee you, if E3 was gone forever, we'd all miss it.