This is all well documented on the website, please read through it.
You can get a fair bit of benefit from using the boot.img like you say, but it will only go so far.
While I wouldn't recommend it, there are flashable ZIP images of microG, but it'd be at the downsides noted here: https://divestos.org/index.php?page=faq#rootSupport
This is more of a statement to the shit show of modern Android. A company worth $1T+ can’t be bothered to figure out how to support devices more than a couple of years and it’s left up to a random developer.
"They" has been an acceptable default third-person singular pronoun since at least the 1400s. If there's something you'd prefer, it might be wise to list it on one of your user profile pages.
Either way, I suppose "he/she" could be used instead if that really is an issue?
They is more inclusive! ^^
> For your sake (Iewell) // I am glad at soule, I haue no other Child; // For thy escape would teach me Tirranie // To hang clogges on them.
[0]: https://www.oed.com/view/Entry/200700#eid1288185420
[1]: https://en.wikisource.org/wiki/Shakespeare_-_First_Folio_fac...
(I suppose postmarketOS is similar in spirit)
Does building a GSI make sense to cover more devices? Or would that not make sense in this context?
Great Job and project, thanks again!