Rest assured FE developers are no different than artists
the end product, the UI, is limited in terms of edge cases
the backend however, there is no limit. business logic, automation, all of these are endless edge cases.
if any FE engineers thinking they should switch to BE, its too late. There is large generation of those that have been using PHP since early 2000s, have seen everything under the sun, and their experience is irreplaceable
Rest assured BE engineers, your golden era is coming. The era without FE engineers hounding you for API parameters and QA rejecting your tickets for some UI bug.
Same thing for devops and cybersecurity. Your golden era is coming.