The force as part of all living beings always has been part of Star Wars canon
About the discourse with Sabine and Ahsoka and Ahsoka supposely breaking previous canon by training Sabine, I believe itĀ“s best to look at the facts of the previous trilogies first to get a balanced view about this.
The force always has been part of every living being since the original trilogy, Yoda and Obi-Wan talk about it as a force field that keeps united all living beings in the galaxy, that helps them see the past or the future, how to avoid trouble and how to connect with all living beings around the people using it, this is the original description of what the force is and this didnĀ“t change in the series, Ahsoka is just recognizing this fact to train Sabine in the Jedi arts.
The level of force sensitivity is the thing at question here, not the force itself, on the battle over the first death star all rebel pilots had the force because all of them were living beings but Luke was stronger in the force than the other pilots and so Vader could detect this, he didnĀ“t say "He is force sensitive" or "He has the force" , he said "The force is STRONG in this one".
Sabine as a living being with mandalorian training can perfectly learn and practice the Jedi arts even if the intensity of the force in her isnĀ“t as strong as Jedi trained by the Jedi Order, like Kanan, Ahsoka, Anakin or Obi-Wan, she still can learn and become someone like Chirrut Iwe from Rogue One, who certainly was using the force in his daily life and practiced his martial arts trusting it to protect him.
In fact I could go as far as saying that most of the Rogue One crew, Jyn Erso, Andor, Baze, Chirrut, despite not being jedi or strong in the force, still trusted it to help them steal the death star plans and the only one in the Empire who noticed was Vader, hence his comment about the force being stronger than the Death Star. It doesnĀ“t need to be obvious or impressive, it just needs to allow certain events to happen at the right time.
The force always had faith elements to it since the original trilogy and even not strong force sensitives can use it sometimes. Vader knows this for a fact because as a child he knew exactly what to do to protect himself or win the podraces his owner keep putting him expecting him to die at any moment. This is the force acting despite no training and thatĀ“s how it acts in most beings.
Even the strongest force sensitives by sheer potential in the series: Anakin, Palpatine, Yoda, Luke and Leia needed traning to truly access that level of conection and control over the force because they may have been the beings with the most potential but this didnĀ“t mean they didnĀ“t need to learn discipline and method to develop their potential.
Ahsoka and Luke are another example, Luke definitely has more force potential than Ahsoka, as AnakinĀ“s Son "the force is STRONG in my family" , most of it already developed but Ahsoka knows way more about the force(at least at the time the Ahsoka series is happening) than Luke does, for her sheer training and experience.
So what Ahsoka is doing is traning in the Jedi ways someone who would not have been called or accepted at the temple but who nonetheless can learn to practice the force to help her in battle like Chirrut did or to get a stronger connection with all force sensitives around her and thats not wrong at all, neither does it contradicts any previous trilogy or canon.
Also, at this point, Ahsoka isnĀ“t acting on behalf of the Jedi Order, in fact she still has conflicts over it, hence why she has not tried to help Luke more in the rebuilding of the school and my guess is because sheĀ“s trying to develop a variant of what the Order believed just involving people with different levels of potential while Luke is trying to rebuilt the school in the classical training of the old Jedi Order, at least in current canon, we donĀ“t know if he will keep that path.
They could either go their own two ways or get to an agreetment over how best to rebuilt the Order but only time can tell and both have reason to want to make this slighty different to the way the old Order managed their training even if they really want to keep the traditions.
