Some forms of conservatism are necessarily antisemitic.
That doesn't mean that those of us who are conservative or libertarian and NOT antisemitic should stop being conservative or libertarian.
If some people are not buying certain "Jewish" products it's most likely because those products are made in Israel and those people are just anti-Israel, or opposed to Israeli domestic or foreign policy. Being opposed to Israeli domestic and/or foreign policy is not necessarily antisemitic no matter how many neocons claim it is.
But environmentalism is much more philosophically grounded in its Anti-Semitism as it uses nature and/or nature worship to contrast itself with Jews and Christian who emphasize transcendentalism above nature. Environmentalism is a form of existentialism rooted in 1800’s Germany that was aimed directly at the Judeo-Christian worldview.