For me, it was the lack of support for certain Wi-Fi cards. I had to pull an older Wi-Fi card out of an old Chromebook, because no flavor of Linux supported the card that came with the (Windows 11) laptop. And guess who has two thumbs and no Ethernet port…

Finally got it working, but at one point i was almost willing to have a USB tether to my phone, just so i wouldn’t have to fight with windows anymore.