I'm sure you did your research. I'm writing for other readers who are interested.

There are a few alternatives, more can be found but this is a selection of the most prominent offerings.

/e/OS: https://e.foundation/e-os/

GrapheneOS: https://grapheneos.org/

LineageOS: https://lineageos.org/

CalyxOS: https://calyxos.org/

PostmarketOS (based on Alpine Linux rather than Android, and what's used in Pinephones): https://postmarketos.org/ (for some reason the site is currently down)

Some of these are not like others: https://eylenburg.github.io/android_comparison.htm

Does Waydroid work well on mobile Linux GUIs like Phosh and Plasma Mobile? If it does it could be real handy to sandbox some Android apps you need for work or whatever while still using a proper Linux base

Generally, it depends on the app. Mostly works fine for me. More info: https://source.puri.sm/Librem5/community-wiki/-/wikis/Softwa...

Alternatively, consider Librem 5, which is more stable, since its software is developed by a dedicated team.

I thought about Librem 5 but the price is too high for me to casually buy. I'd def like to try it out though, so maybe I'll splurge.

Librem needs to do something PR-wise to fix the reputation they developed regarding massive product/delivery delays.

They exist in the frustrating spot of “I want to like them, but I can’t trust the purchase based off of everyone I know who tried getting burned, so now I’ll just look at a Pinephone because it’s easier”.

I don't understand how delays of preorders are relevant today, when the devices are available within 10 working days.

Call me when a glance at the Purism subreddit isn't people still complaining about problems here. ;P

People in charge of that subreddit are Purism haters. They ban supporters and encourage complaining, even if baseless.