These all have a maximum of 16GB of RAM. Qubes is already a resource pig. My Thinkpad P51 has 64 GB or RAM and ran Qubes 4.0 perfectly. In fact, my laptop is provided in your list from this thread of those supporting Qubes 4.1.
Am I boxed into taking a step back in computational resources if I want hardware that is assured of running Qubes 4.1 stably?
It feels like a walled garden has quietly been constructed around Qubes OS.