I don't think he's dissing them. It just sounds like he's not a fan of VOTW or procedurals, which is just his opinion, and it just shows that he sees character growth as being tied to main plots evolving (which, yeah, isn't necessarily true, but is still an opinion). He knows some people will like it but he, and according to him others on the show, didn't, so that's why they didn't want to.
That being said, he clearly also doesn't get jumping the shark, since Arrow technically did it several times (metahumans, using the LoA, magic, Ray's intro,etc.).