According to Joseph Meehan :
Gasoline not only suffers from evaporation as you well explained, but it
also suffers from chemical reactions that can occur without any evaporation.
The various hydrocarbons can and do tend to react among themselves,
generally forming heaver - longer chains. This is the part of the process
that stabilizers can help slow down. This part of the process generally
takes a fairly long time.

True enough, but with 2-cycle gas, it implies that even a stabilizer
won't help (much) if you encourage evaporation (ie: running the engine
dry). Stabilizer or not, the majority of the gasoline residue will
evaporate, leaving the heavy ends and 2-stroke oil behind. Gasoline
stabilizer cannot prevent that from turning into sticky/obstructive goo.

Particularly nasty in engines with small fuel lines and small fuel
passages in their carbs (ie: weed wackers).
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.