That's a pretty stupid take because the combination of genes is unique for each life form so those genes are just as trapped in our bodies as the bodies are trapped in themselves.

If you want to talk about genes as an immortalizing life form then those genes are just as prone to natural selection as the carrier. Some genes are old, some are new. New genes have an incredibly high attrition rate. Not much different from nature. Genes are suckers and losers just like their carriers.