Unlikely. Mostly because its too good to be true.

Going back 400 years to the middle of Yoda's life? Following the Unknown Mission from non-canon EU? Character-driven films? Whole project launching with a video game?

Sure, sounds awesome. But it doesn't seem likely. Hope to be wrong!

I don't get it - what's cringeworthy about the rumour?

I don't think its real, but would be happy if it was!

I highly doubt RJ will get his own trilogy.  They announced he was getting one before TLJ even came out.  That was back when they thought they could throw anything up on the screen, call it SW, and it would make them enough money to make a huge profit AND finance the next film.  Well, TLJ, Solo, and ROS proved them wrong.  Plus, Kathleen Kennedy already came out and said no more trilogies shortly before ROS released.  My guess is they were seeing smaller preorders of tickets and knew that this one wasn't even going to match the already disappointing TLJ.

There's nothing in TLJ from a pure filmmaking POV that indicates to me that Rian Johnson couldn't make a very strong original Star Wars movie with his own characters, putting aside people having their own head canon about what a character should or should not do, which wouldn't exist with new characters.

That said, he's had a huge success with Knives Out being a big hit for Lionsgate, he will have studios lining up to finance anything he wants to do, he doesn't need Star Wars or the toxic fandom that comes with it, I'd say thanks but no thanks and go take a nice $5+ million paycheque to make whatever I want somewhere else if I were him.

When you're going to be one of the most in-demand younger directors in Hollywood, who needs that headache and a 43 year old IP that's quite frankly pretty tired. You don't need that shit in your life. 

Unless George Lucas is supervising this it's going to be more crap from Disney execs that don't understand Star Wars.

Will wait to see how bad it goes before thinking about watching it.

One could say that even George Lucas don't understand SW.

At what point do you realize you have to let something go?

The worst part of this news is finding out there is an entire rian johnson trilogy.
The best part of this news is that david benioff will have no involvement.

Pretty sure this is the story arc Benioff and Weiss were working on, it was supposed to take place in the past before the prequels but not a KOTOR type thing so 400 years in the "High Republic" era matches up pretty much spot on with that. So likely they do have "involvement" if its based on their idea/concept.