Yes, writing and maintaining less code is great for a developer. We can follow this to the logical extreme and marvel at how easy it is to write and maintain a program whose only function is to print "hello, world" to the console. Nevermind the users, what do they matter?
By the very nature of assigning development time to these antiquated features, you're assigning them away from other features, bug fixes, or requests that may have a larger user reach.
Development is a finite resource, the argument here is to allocate them to hard-to-secure, outmoded, replaced, technology instead of anything future relevant. It doesn't make sense.