Probably because "Windows Modern Standby" makes laptops unusable by turning them on in your backpack and cooking them.
Consumers _do not care_ if it is the firmware or Windows.
Dell was one of the earlier brands, and biggest, to suffer these standby problems. Dell has blamed MS and MS has blamed Dell, and neither has been in any hurry to resolve the issues.
I still can't put my laptop in my backpack without shutting it down, and as a hybrid worker, having to tear down and spin up my application context every other day is not productive.
Maybe the most tragic part is that this drags down Linux and plagues it with these hardware rooted sleep issues too.