Surely it was originally the Jedi council that sought after new recruits with the force and trained them.
DV wiped them all out, bar three of them, two died, leaving LS.
LS tried to do training, but one absconded.
Who else now would know of potential Jedi, apart from ones who may be offspring?
Seeing one of my favourite film characters not go out in a blaze of glory, but murdered in cold blood by his son, and then watching his lifeless body just fall into that mist.
A very powerful scene.
Reminded me of the moment Sirius was struck with a spell, causing him to fall through the Veil...