this could result in endless thread so all i will say is that you have * physically available as stand-alone key on the numerical side of every keyboard ever made(unless you are a weirdo(=micro minority) and use the variously mutilated physical keyboard layouts) and & is physically available as stand-alone key on iso 105 layout, for example, but most importantly it is a character widely used in most languages as actual character, whereas ^ is really not.
the networking does not necessarily has to be in standard library, but there has to be some "official" package/library that handles these things on a superb level and is ready to go in an instant. for odin, there is one http server in the works, and according to bil it will be the "official" package but when you look at it, it is VERY lacking in many aspects. it's more like a guy made a library that kinda works, but it's nowhere near the expected standard and performance one expects.
JB had a stream couple of weeks ago where he summarized that three things prevent the language to go public and he is working on them. hopefully next year should all be done.
the main problem is keyboard layout and lack of easy access to ^ in most of them. not everyone uses US layout, it's actually minority of computer users. plus, the notion of whether the ^ goes before or after variable can cause a lot of programming and code reviewing issues. but it's just a personal opinion, obviously.
iirc it is about 6 or 7 GB on windows that you need to install. Zig can do it in 75MB, Go i think around the same. Rust has the same problem though.
As for IDE, people who use plain editors like vim, emacs... exist but their numbers are merely a statistical error compared to people that use IDEs(i am counting VS code into this category even though it's just electron). Of course we could debate what is and what is not IDE, but the point here is that we need syntax highlighting, refactoring, jumping to definitions, finding usages and other functionality that IDEs provide.
before reading the article, i have to say that odin won't make it unless it will invest serious time into networking. graphics, which is where odin shines, is very niche market and i bet that once JB's Jai comes to public, it might crush odin in this field by sheer persona behind the language in this specific niche. what makes or breaks language is the ecosystem and abilities to use it in various domains. today, the internet/networking moves mountains. it's where the most engineering and money is. if you cannot write fast http/rest/grpc servers with most used databases, your language will fade away into obsolescence, because it might bring nice new features, but if it cannot be used in the most popular fields, it will not make it. and odin is suffering in this aspect tremendously. it has the simple go-inspired syntax going on, but it has no oop/methods, so right there you have an obstacle for new users - it is too different from the norm. it might have great integration with various graphics libraries but it if is too different and lacks the ecosystem of libraries, package manager... there is no reason for it to exist. it also requires GIGABYTES of crap you need to download on windows in order to be able to compile a program. it also needs IDE support, mostly jetbrains, visual studio and vs code, which are the dominant IDEs today. in short, if it lacks convenience of Go or Zig, or even Rust, there really is no point in investing time into it.
PS: this is just off the cuff comment, not too thought out. also, Odin has a chance to beat Zig, due to better syntax and being essentially complete, beside having official spec. Which is not the case of Zig. Zig has traction but lacks in areas where Odin does not. So I would focus on Zig as the competitor, Rust as second. The simplified go-like syntax is one of the main selling points. But there must be more to the language.
PPS: I think the choice of ^ to handle pointers is one of the worst decision in the syntax. The * and & are the norm and should not be messed with.