> Do you also have thoughts to add or am I supposed to read and respond to 2000 words of material here?

The idea is that relatively low specs do not necessarily mean low performance. It depends on the software a lot. For example, SXMo provides a smooth experience with maps and Youtube even on a Pinephone. The battery life may be a problem though.

> the thread is about GrapheneOS

The subthread you started is about a phone "with a headphone jack that I can actually use more conveniently than a tablet", so I thought I could intervene with some other options. I might be wrong though.