I haven’t used it often, but the few times I have asked it very specific programming questions, it has usually been pretty good. For example, I am not very good with regex, but I can usually ask Copilot to create regex that does something like verifying a string matches a certain pattern, and it performs pretty well. I don’t use regex enough to spend a lot of time learning it, and I could easily find a few examples online that can be combined to make my answer, but Copilot is much quicker and easier for me. That said, I don’t think I would trust it past answering questions about how to implement a small code snippet.

I’m from the US as well, and I can verify that very few average people use those types of messengers primarily. It is almost exclusively iMessage and SMS/MMS/RCS texts as the main form of messaging. I will admit that quite a few people will use the messaging features that are built into social media apps (like messaging in Snapchat, Facebook Messenger, etc). At least to me, it seems like those are moreso used for sending memes or messaging people you don’t interact with regularly and are still secondary to the other forms of messaging.

Eh, their business practices regarding selling games are fairly consumer friendly, but overall they have quite a few issues themselves that aren’t great. I wouldn’t hold them up as a great company but rather a better company than the competition, which is a fairly low bar.