3 points
From what I’ve seen this isn’t true. Search for “Windows AptX LL” and you’ll see dozens of ways you might install drivers that add support. The most common advice seems to be to buy a dongle that supports it.
1 point
All my laptops and PCs support AptX out of the box without any 3rd party stuff. There can be exceptions, sure, but I haven’t seen them myself.
2 points
AptX and AptX LL are not the same thing. AptX has the same latency as LDAC and SBC: >200ms; whereas AptX LL is actually decent at ~30ms. AptX is supported by Windows out of the box, AptX LL is not.
1 point