You won't find the chat links in user profiles, it is located in the top right on the black bar, in the little stack exchange hamburger "community" menu, it can be a bit hard to find.
It is also located on the footer of every page
Here is a direct link too, just for completeness
I think you may have a bit of a misunderstanding about what Meta is for, it is not a special place for advanced users to discuss but a help site (just like main) for Ask Ubuntu.
"new users can easily access Meta"
Sure they can, that is the point. Meta is where people can come and ask questions about the main site and new users are the demographic most in ...