Initialisms are pronounced by saying each letter in order. Acronyms are pronounced as if they were words.
"ID" is a funny case because it's an ordinary abbreviation, and not really an initialism* or acronym, but it's pronounced just like an initialism. I think I'd prefer it "ID".
I would definitely avoid writing it "Id", lest it be confused with Freud's concept.
* unless as Norm Macdonald joked, the "D" is short for "dentification"
Not sure why it is inconsistent to have UUID be all caps and Id be title cased? They feel different to me. But maybe I'm missing something.
Not Vale, though. Vale's pretty slick; although personally I've always gravitated to RedPen.cc and LanguageTools[1] more than Vale. Grammarly, yes, Grammarly is also in this natlang linter space, but has possibly the least responsible data safety rules of any VSC extension I've ever seen. It's harsh, but I comprehensively advise customers away from Grammarly if they have any kind of data restriction at all.
[1] LT for no other reason than ASD STE-100 checking - it's old tech
* apply vale to just the doc I was working on
* have a minimal set of rules
* add to them over time
At $curjob, we have a detailed public list of rules of doc ( https://github.com/FusionAuth/fusionauth-site/blob/master/Do... ) and as our team expands, I'd love to have them be applied rigorously. vale seems like a good fit, but there's an activation energy that I haven't been able to get over yet.
I am not aware of any other cli tools similar to this, though, so totally admire the team behind it.