Yanky55 – no, you do not let shmitta esrogim rot and discard them. There are complicated halochos with esrogim as opoose to other Israelie produce
Don’t paskan on shmitta if you don’t know what you’re talking about. As I said above, to Jfem02 call a Rov / Dayan.
When you’ve done that then come back and tell me he said to let a sahmitta Esrog from Israel rot and then discard it
PS don’t use the word ridiculous on something you know nothing about.