As someone who has worked with RoR in the last year, they’ve come a LONG way in the last three years.
Take a look at Turbo/Hotwire and other new implementations in RoR. They eliminate like 90% of the necessary Javascript and the libraries are reliable which is nice. A guarantee not always found in the npm ecosystem.
Plus they did create a lot of web development ideas/concepts that were later integrated into the “modern” approach of web development.
I will say though that article is sparse and not informative of modern Rails.