I've been riding motorcycles a long time. approaching 50 years. I've never used any type of fuel stabilizer.
all my bike sit at least december thru march...some longer some year maybe a bit shorter.
I just fill up the tank to limit condensation, and in the last 15 years or so put the bike on a battery tender. the bikes always start...some times need a bit or ether in the spring t make firing up easier.
It get cold here in Vermont