Absolutely: a chainsaw consumes at first sight 1 L of oil for 10 L of gasoline. I put the oil from the mower. They say it's carcinogenic and you have to put chain oil. This makes a second use of the engine oil of the mower, it saves money, it avoids going to take the used oil to the recycling center, and that's less given to Putin or BMS (Mohammed ben Salman).
What worries me the most is the lack of emergency chain stop. Its assembly is dangerous.
AMHA chain oil is as carcinogenic as engine oil, it only looks "cleaner", and in the water table, it should not be very different either ....