I ordered a bunch of random STIHL parts to have on hand for "common" type breakages (clutch springs, pull chords, wear strips, etc.) and got them in 3 days, and there's a 500i on the sales wall, along with 2x MS261, 1x 271, 1x MS400, a bunch of top handles, and other saws. Don't know what twig poked Donato, but from an availability standpoint it seems ECHO is doing great, STIHL okay, and somewhere down the line Husqvarna is finally getting parts in. (No hate, just where we're at locally.)
Many companies across various industries are seeing supply chain shortages, including STIHL. It's just several things hit Husqvarna at the same time.