Many of those games listed are good, great, and genre defining.
Maybe I'll approach this from a different angle then. The ceiling for quality in the RE1 - RE4 era was leagues higher than everything that came out between RE4 and RE7.
There was rougly 5 and a half years between RE3 and RE4, and between that time we got Code Veronica and Zero (good but flawed entries), and REmake, which often is regarded as the greatest Survival Horror game ever made. Juxtapose that with the wait between RE4 and RE7, there was 12 years. Over twice as long. Not to mention during that time, nothing that came out was close to the level of quality we got from the previous games (I mean the really good entries. Obviously Re5 is better than Dead Aim for example). It was just a longer and darker period of time for the franchise.