In modern warfare 2 (the first one) you could hammer x and just skip through them all and get straight to the main menu.
Even better, that game gave you an option to go right to the MP lobby.
As for all of media always self promoting themselves, it is a weird thing. Look around your house. Most stuff you own doesn't have the brand name on it at all. And nowhere in the instruction manual (if it has one like lets say you bought a new BBQ) does it ever say who made it.
To me, the key reason why media always has all this crap is for egotistical self promotion. As people said above a lot of this is bound in legal issues where TV shows and movies have to show credits to some degree, so at some point it all got written up in agreements. Which is even weirder because depending on the content, some will show only the main cast and crew, but others will show a laundry list of 1,000 people including even the caterer who supplied the lunches.
The only industry in the world where there's mandatory logos and credits plastered everywhere.
Technically every product you buy the company could jam in a small leaflet saying who the CEO is and all the way down to the janitor is cleaning the toilets, but you never see that. Or at minimum on their web page, list everyone involved. Never see it.