Fans of the other two are able to actually criticize their shows, if they don't live up to their admittedly often also ridiculous expectations. Sony for instance got a ton of shame for their last two E3 showings.Oh I agree with you but I think fans are always going to hype them up because its the fans who love all that B-tier stuff. They'll also be more satisfied.
Since the start of the year I bought two games on Switch, Celeste and Octopath Traveler, both are good games, but for the foreseeable future I see nothing on the horizon for Switch that I want to play. So I'm very much annoyed at the constant blowing out of proportion of these Directs by the entire internet, just for them to always end up being 80% old ports (seriously does anybody else remember how much Nintendo fans shimed on the PS4 for being a "port machine" back in 2014?) in addition to some B-Tier Nintendo franchises, as well as some teases of their bigger IP, without actually showing much if anything of them. Outside of Smash, that is essentially what their 2018 lineup of Directs has been up to this point.
For me 2018 will be a very disappointing year for Switch, I also only bought Celeste and Octopath so far and I'm probably only getting Pokemon and Smash later, neither of which I'm too excited about. I think that's another thing which drives up expectations, since this year has been so disappointing people expect that there must be more coming soon.