Uh, no. What's the sense of taking a position if you don't bother to defend it?
Be honest. The real reason that Stihl only has a 90 day warranty is:
1) Because they don't have that much confidence in their product's quality
(...Hey, maybe it's hard finding good help these days in Virginia, eh?)
2) Their (Stihl dealers) parts/repair business is a cash cow. After spending big $$$ on a chainsaw, who's going to balk at paying a few hundred more $$$ when something goes wrong the first year or so? Particularly when you can only get parts and service on the saw from a Stihl dealer...and in many cases, apparently only the exact Stihl dealer you bought the saw from. How's that for a monopoly on service? LOL!
3) They're resting on past laurels and their prior good name.