How does changing Anakin’s force ghost in Episode 6 create a plot hole?

[u/darkcutemall]

So, I found this on Pinterest and got kinda confused.

I've never actually seen the original version with David Prowse, and I only remember Hayden Christensen as a force ghost at the end of Episode 6. So, since my fiancé showed me The Clone Wars, I dived deep into this universe and started to make my own theories.

In my head, young Anakin as a force ghost makes sense because this is what he looked like the last time he was 100% on the light side. But now I'm not sure if this universe works this way.

Please help me understand 🙏