Definitely not dead. But if were a new software engineer trying to work out what language I should pick up next Ruby would be pretty far down the list these days.

It's alive in the way PHP is alive. It has so much stuff built on it that it will be around for a long time. But I don't feel Ruby is a good choice for projects anymore. The failure of bringing types in to the language has really doomed it. Pretty much all cases you might consider using Ruby, TypeScript is a better choice.

I have been doing Rails for the last 8 years but it's really showing it's age. Constant issues in our app that TypeScript would have caught, along with pretty dismal support for advanced editor features you see with typed languages.