You mentioned before that Disney changed the way lightsaber crystals worked. How did they work before and why is the new one bad?
Lightsaber crystals used to work in a very simple way: The color of the crystal sets the color of the lightsaber.
In the Old Republic, Jedi used lightsabers of every hue, but by the time of the Prequel, most Jedi got most of their crystals from Ilum, where Blue and Green were the most plentiful. The reason the Sith used predominately red is because the Jedi controlled the places where lightsaber crystals were found, so they used synthetic crystals which almost always came out red.
After a while, it just became the aesthetic.
The new canon Kyber crystals are clear until it seeks a Jedi out and forms a bond with it, where it will then turn to whatever color it wants, and like a living being forms a “bond” with its owner, and the color is set based on the owner's personality.
This introduces so many problems, like when Jedi use another person's lightsaber, or in Attack of the Clones when Anakin and Obi Wan are thrown spare lightsabers. It also means that standard-issue lightsabers like the ones the Inquisitors get make even less sense than before. They work when you can manufacture red crystals, not so much when you have to "Bleed" them like the edgy emo bitch you are.
But the reason Disney made it this way is because the fandom had spent the last decade turning a simple aesthetic choice into something "meaningful." The idea of your lightsaber color saying something about your personality is something backported from the Harry Potter series because if you leave a fandom long enough they'll eventually remake the Hogwarts Houses in everything.
So Disney, because they wanted to sell you a lightsaber building experience, made them work the same way wands do in Harry Potter so when you go to Galaxy's Edge you get to build your unique lightsaber that's completely special to you and only to you.
Which is really fucking stupid given that the hilt designs were already unique in the first place.
Apparently this wasn't adequate.
It's the opposite problem of midi-chlorians. They have over-mystified the lightsaber as a concept, and it's telling that in no way does this concept actually work in-universe.
This is another one of those things that falls under the category of "This is Lucas' vision, yet it's never shown in any of the things he actually made and not reinforced at all."