He's somewhat against package managers (doesn't want Odin ecosystem turning into NPM or Crates.io where a single package draws in a thousand dependencies).
But yeah, Odin's LSP is used by most Odin users, including staff at JangaFX.
yes and that is a design decision.
Its not just the dependencies bloatware, there is also an issue of accidentally pulling in a GLP license code base and several others. But if one wishes to make a package manager for Odin, they can do so and other Odin users may use it if they found it to be really helpful but from what I know, Ginger Bill will never officially support it as it doesn't align with his vision of the language.
The decision, which is not design per se, is to not have an OFFICIAL package manager, nor even endorse a third party one.