On the topic of horrible ideas in Star Wars, I’d say the concept of cloning in this entire franchise. It creates massive plot holes, like why did Darth Sidious turn Anakin Skywalker to the dark side if he could just easily clone himself and then turn said clone to the dark side?
Or why didn’t he replace Vader’s damaged limbs/organs with cloned parts instead of crude bionics? Or create a massive army of unquestioning Force-wielders?
There are just so many problems with Force-sensitivity being genetic, and this is one of them.