Yeah, I'd much rather tune it a little rich so that it 4 strokes than risk seizing it up by running it a little lean. Spark plugs are WAY cheaper than pistons and cylinders.
As far as everyone forcing battery tech down our throats, I don't see any reason for anyone to get their panties in a bunch over it. At the end of the day, money still talks. Stihl and everyone else can "offer" battery powered products, but that doesn't mean that the consumers have to buy them. If a battery powered saw is a good fit for your needs, buy one. If it's not, don't. So long as people are buying MS261, MS400c, MS462, MS661 chain saws (or their counterparts), the OEM will keep making them. OEMs that are foolish enough to stop selling a product that sells well tend to go bankrupt.
As far as feeding our enemy, there are enough people within our boards who are bound and determined to subjugate the population that worrying about your hard earned money going to a foreign enemy is a waste of time.