Twitter also had to move away from Ruby into a service-oriented architecture back in the late 00s. It's not a very scalable language, even when you hire people who work on the compiler.
"Twitter moved off rails and I was always really curious about that story. Here's a testimony from someone who actually worked at Twitter when they moved off. Yeah they moved off because they had a badly designed Rails app, that happens. Okay and then they moved into what they thought was better a constellation of java microservices and then nothing fucking happened for 10 years. They poured concrete over the application and hired thousands of people to make no progress at all."
You can watch the whole talk here, the quote starts around the 15 min mark:
They famously and stupidly blamed Ruby and everyone ate their blogpost up because this industry is full of cargo cult behavior patterns. Everyone acts like lemmings and just assumes BigCo knows better than they do.
FTA it sounds that it wasnt he language of framework that was an issue, but rather the monolith model.