My first step to switching off Apple is my laptop. I bought a System76 laptop. I also considered the Purism laptop. I'm a Linux newbie and went with System76, some explanation below. (Shipping times were also a factor in my decision)
Purism's challenge is they may be trying to solve a "2-miracles problem".
Miracle 1: open source hardware business
Miracle 2: privacy focused business
To the extent open source hw/sw SUPPORTS privacy, they're in alignment as a single miracle. But the alignment isn't perfect, it's all still so new. To put it another way, if Purism fails that doesn't affect System76 much. But if System76 fails that likely means a rough road ahead for Purism.
Those who can at all muster the courage and budget to buy Purism right now totally should. Lead the way where others cannot.