2) The Clone Wars are (still) Canon.
In a world of uncertainty when we don’t know which character is still apart of the expanded universe, which story is about to be contradicted, or which origin story isn’t about to be completely re-written… we can count on one thing. According to Disney, The Clone Wars are still Canon. All great battles, characters, adventures that you are about to (re)watch are definitely, 100%, without a doubt apart of the official Disney Star War Universe. (until Disney decides they aren’t)