@jofr @ajb the slow argument does generally not work anymore. Since ages.
And since you migrated to Python it's useless to even bring it up here, since you didn't migrate to a faster platform, didn't you? 😉
Library-wise it's a smaller selection of libraries but I'd claim that you can do pretty much everything.
#Rails integrates pretty much with every front-end library but also brings nice solutions with the #hotwirejs ecosystem.