Part of my job description includes repairing PCs. I see quite a lot of them over the course of a month. I also set up lots of new PCs for people when they buy them. All I see Bitlocker enabled on by default are Surface devices and the occasional Lenovo laptop/tablet hybrid POS. So I pulled that statistic from my own personal observations.
Yes they are. Downloaded 22H2 ISO Thursday at work. In fact, with the correct script, every single Win10 ISO is still available to download, all the way back to the very first version.
