Honestly I don't hate the language itself that much (I'm just learning it though so who knows) but developing with it fucking sucks. First npm installs a thousand dependencies, then you have to use it to install an entirely different package manager (yarn) and hope it works.
If you're using npm, you install a package or two that you're working with and get 10+ vulnerabilities. It tells you to run "npm audit fix" so you do it, but it just lists the vulnerabilities again and tells you to run "npm audit fix", so apparently you're just stuck with those.
Then you try running your react app and it crashes with an error about failing to stat a random file in your home directory. It turns out that you mistyped an import, and instead of giving an error about that it recursively backs up and checks every single file to see if it's the one it's looking for. Cool.
Cargo has been the best in my experience too...about as painless as deps can be imo.
If what you say about poetry is true, I'll definitely have to look into it asap.
Never used bundler or Ruby, and I've never been sure about what the appeal of Ruby is, so if dependency management is more painless than most languages, I'd understand immediately.
I've never had a more frustrating dependency experience than with maven. Using XML and being tied to Java are more than enough to guarantee I never touch it again unless absolutely necessary.