Sadly not, it just shows how to install LXP during bare metal OSD using ConfigMgr. Doesn't really give me the foundation understanding of when I should LXP over LP, or vice versa.
I have noticed in lab however, trying out installing LP and LXP, that everything (?) is localised using LP whereas LXP has the majority localised, and you can "top-it-up" with FoDs.
The benefit I found with LXP is that the InstallLanguage does not change, so if you use task sequence to IPU then you don't have to worry about using lots of OS media with different languages.
The onus is on the user though because not everything is localised.
Also, it seems you have to update from the Microsoft Store to get more localised, because immediately after OSD not as much is localised compared to after updating lots of apps from the Store. This lines up with what I've been reading about LXP, it gives Microsoft more opportunities to implement better translations over time seamlessly.
That's my take after playing around in a lab for a couple of days. It's quite a minefield really.