It's like calling a song lazy because it uses the same chords as another song. Gender/race-bent remakes are still entirely original works with new scripts and new shots. Even if they were to keep the script the same and make a shot-for-shot remake with new actors and a new crew, that's still 99% new work that's being done. I'd watch a shot-for-shot remake of something like Star Wars with a gender-swapped cast, that sounds like a lot of fun.

Ideas are worth very little, it's the execution that matters.