My Kubota Tractor Owner's Manual specifically approves Calcium Chloride, not methanol, not beet juice, not windshield washer solvent.... Calcium Chloride is effective, economical and safe for use or it would not have been used longer than most of us have been alive, nor would the farmers and contractors that depend on their equipment continue to use it. If the Calcium Chloride presented any real problems, I don't think dealers would continue to use it and risk alienating their customers.
It's used extensively on roads as a de-icer so it's apparently non-toxic. There appears to be no damage to the proliferation of weeds or grass along these roads so the long term effects on vegitation seem to be minimal.
I have a pair of tubeless tires that have been loaded with Calcium for over 35 years with no problem. A normal puncture in a tubeless tire can be repaired in short order with a plug and minimal loss of fluid. Tubes, as recommended by many to combat the "corrosion problem", create serious tire repair inconvenience.
No matter which liquid is used, make sure there is no leakage from valve stems or around the bead. The constant moisture can cause corrosion as unlike inside the tire, air is present in sufficient quantities.
I have no dog in this fight other than an aversion to continuation of what I see as a MYTH. I apologize in advance to anyone who might be offended or might disagree. It is not my intent to disparage, or convert anyone to my way of thinking, only to assist the original poster.