Bleach always caught up to the Manga which is why they had to make lots of filler. After season 16 they decided to end the series bc nothing new was there to make episodes about. This reboot is a continuation of the story, you can see it as Season 17, and it's the best anime I have ever seen. Every Bleach fan who had to wait 10 years for the final arc to be animated gets a beautifully animated masterpiece. There is so much attention to detail in every aspect, it's just incredible. They couldn't have made a better continuation, tho I said that after the last cour as well and now they made the animation even better looking.

So if you watched all of Bleach when it first aired or if you wanna start the series from the beginning now you won't regret it.