Throwing Blades???
Hard to believe your have 30 years experience, when you call bars blades, and you mix up bars with chains.
Probably just a regional or generational difference. When and where I was raised, “blade” was used interchangeably for the guide (bar or bow) and the chain. There were few, if any, occasional users then. Loggers and pulp wood cutters used chainsaws, most everyone else used an axe.
Ron