The disappearance of the commandments

It seems that as time goes by, more and more of the Torah’s commandments are losing their usefulness altogether. Everything related to the Temple and the priesthood has been irrelevant for years, and apparently no one really wants to return to a situation where those who rule the people are a caste of priests funded by donations. Many women’s policies and almost every legal doctrine are almost irrelevant today in any way, and will never be relevant again. Seed issues are already being implemented mainly through all sorts of tricks, and it seems possible that in the future they will disappear as traditional agriculture diminishes. The laws of kashrut may disappear with cultured meat, and of course, cultured milk and cultured vegetables could equally well be possible, or perhaps even synthetic food. Doesn’t the disappearance of the commandments indicate that the Torah is not truly eternal and that its relevance to something depends very much on time, norms, and specific technologies? Does it make sense to you that God gave a Torah that is losing its relevance?