Every medium could be honestly described as rubbish, if we are being honest.
Games? Triple A, Asset Flips, Shovelware, etc...
Movies? Current Hollywood and the large amount of things we never even notice.
Music? For every Good Musician, there are thousands of Justin Bieber.
Literature? Just look in a supermarket at the bargain books section and behold the low-quality romance novels
If a market of an entertainment medium is big, you can expect 90% of it being filled with stuff that should never have been created, with the remaining 10% being the actual good stuff.
Old stuff being better is mostly a bit of a mix of Nostalgia, but also the fact that the 90% of stuff gets forgotten mostly and only the 10% are remembered.
When I wanted to LEGALLY ACQUIRE old games for my LEGAL LIBRARY OF IT, I noticed that for GBA alone, there are like hundreds of games with only a few actually decent to good.