Almost any crafting profession involves practice outside of work; for example: painting, photography, sculpting, etc.
I also suspect many academic professions fall into this trap as well: mathematician, physicist, etc.
As a developer myself, I don't think this particular aspect is unique, instead I think it's a matter of perspective and what we value in life.
For example, many individuals if they see someone reading a phone as they're walking may look unfavourably upon them thinking something like "people glued to their phones, bleargh". However, if the same individual was walking reading a paper book instead, many would simply shrug it off as "that person is a studious individual / bookworm".
Almost any crafting profession involves practice outside of work; for example: painting, photography, sculpting, etc.
Well, if I'm an artist, there's probably not a clear line between "work" and "hobby" unless you are regularly commissioned to create specific works (and even then, unless you're painting portraits, you probably have some freedom in your choices). Photography might be an edge case, as you may do journalism by day and some form of art photography by night.
I suspect, however, that other engineers (mechanical, electrical, chemical, etc) don't have to spend their evenings doing engineering work to stay sharp.
I also suspect many academic professions fall into this trap as well: mathematician, physicist, etc.
As a developer myself, I don't think this particular aspect is unique, instead I think it's a matter of perspective and what we value in life.
For example, many individuals if they see someone reading a phone as they're walking may look unfavourably upon them thinking something like "people glued to their phones, bleargh". However, if the same individual was walking reading a paper book instead, many would simply shrug it off as "that person is a studious individual / bookworm".