If you take the show as endorsing those philosophical implications, then agreed. I'm not sure that's the case, though. My read is that the nihilism isn't meant to be aspirational. Rick is a profoundly broken human being, and Morty is a child who is constantly traumatized by his antics. Everything they do and say to make sense of their circumstances is cope. The problem is that the fans thinks Rick is super awesome for being an alcoholic misanthrope, not realizing that in the real world he would just be a basket case, falling further into depression and substance use until he inevitably killed himself. The writers to try to signal that from time to time, but it doesn't seem to land, and I think that's largely on the audience.

I could be being too generous. Maybe the writers are pitching straight up the middle and I'm being a fart-sniffing sophist. Wouldn't be the first time.