I'm not sure why this has been downvoted so much, this guy states something that might upset some people, but then goes on to provide a pretty sober list pros and cons. This is the kind of content that we want to encourage on HN.
This is not necessarily warranted. Modern PHP is faster than Ruby in many benchmarks; and Rails is still running GitHub and Shopify. Square uses Laravel in a backend serving 100M+ requests per day, with no plans to rewrite. To compare it to a Steam engine and Coal; that’s unfair stereotyping.
On that note, JavaScript’s amount of churn could be an entire discussion by itself. I’ll take some quirky behavior that just keeps working over mindless churn any day.