When I first moved to linux I felt this same way. It gets better. Now days I fucking love those 15 page ReadMes and I’m not bothered if there’s no steps for my distro. The sheer volume of documentation surrounding linux packages is insane. There’s often a ton of ways to configure and manage the to fit your needs. That freedom is what I love so much about linux.
As for the ones with 2 lines, I don’t think I’ve seen that as much. I generally would avoid them unless the source was clear what the project did.
At any rate there will come a day when it starts to click. It’s just a marathon not a sprint.