It’s marked solved, but since OP didn’t post the solution:

-e uses basic regular expressions, where you need to escape the meta-characters ((|)) with a backslash. Alternatively, use extended regex with -E

$ echo a | grep -E "(a|b)"
a
$ echo a | grep -e "\(a\|b\)"
a
$ echo a | grep -e "(a|b)"
$ echo a | grep -E "\(a\|b\)"

The x390/x280 are the same era as these but smaller, so might be a better fit here. The X390 has soldered RAM though, so I’d look for the 16GB version if you can find it (there’s not much of a price difference used)

Graphene OS drops support for devices pretty soon after Google does. It’s not a good idea to buy anything before Pixel 6 to run Graphene OS right now (see https://grapheneos.org/faq#supported-devices)

This will get better going forward since Google is supporting the Pixel phones for much longer (5 years for the Pixel 6/6a onward, 7 years for the newest devices).

I think you’re misunderstanding which ramp I mean. Looking between the wheels of the white car, it looks like there’s a ramp the goes from the parking lot up on to the sidewalk. The white car would prevent a person using a wheelchair getting onto the sidewalk.

The white car isn’t parked in a disabled spot. Its parked in front of the ramp for a wheelchair, which isn’t a space

I wouldn’t bother with the concept of de-federation in a beginners guide. One of the most confusing bits of the fediverse to new users is picking a server. For most users, the one they pick doesn’t really matter, but talking about defederation makes it sound like a really important choice.