Not sure if that was the intended message.
What happens when one of your fungible junior engineers happens to be smart enough to do some tricky things even with Rails?
And then she gets hired by Netflix to do something more career-enhancing than copy-pasting Ruby code from StackOverflow.
Now you're stuck with your revolving door of undercompensated junior developers and a complicated Rails application. Uh-oh!
as a fullstack guy who's worked w/ rails, laravel, etc... and who's done my share of frontend stuff, I'd say focusing on the frontend might be a bigger sell, cause that shit is VERY opinionated lately.
Vue vs React vs Vanilla vs Alpinejs. Do you use bootstrap or tailwinds? Backend code is rudimentary but nailing the ui stuff and also cross platform if needing mobile or w/e is much harder personally.