I am not much sure about using "What is the point" or "Is it worth" :D Just curious that it will add some value till the day I pay for maintenance.
Previously 401 referred to the Force.com developer certification, Now for the developer role certifications there are two new certification programs are available Platform developer 1 and Platform developer 2.
And with the available Dev401 there is a transition exam available to get App Builder Certification.
Will the Developer 401 continue to be available by maintaining all the release up-to-date or will that some day be discontinued(to even appear in our credentials).