Filoni was handpicked by Lucas himself, there for he is his man. Right off the bat, after acquiring the franchise, Disney scrapped the CW and created their own animated series. While Filoni was still involved, the show was very much Disney's product in feel and look. To his credit, Filoni did everything that he could to mold the series into something that held true to Lucas's vision and to the spirit of the franchise but it was Disney's product now.
After the new trilogy was met with overwhelming meh to bleh, it was quite clear that the series wasn't going to critically survive without help. Queue Filoni.
Disney renewed the CW and gave him a position at the helm in running the Mandalorian, both of which have been met with overwhelming critical success.
Filoni knows his shit. He was handpicked by Lucas and is, at this point, essentially his successor. There isn't another being on this planet, except for Lucas, that knows and cares as much about the franchise as he does.