I'd call that a highly slanted interpretation of the text.
A slightly less loaded way of putting it, is that the Republic allowed a well established and highly regarded religious order (with a millennia long history of service and compassion to the galaxy at large) to offer the parents of those young children naturally gifted in the force the opportunity of having their child raised and trained to be a peacekeeper and diplomat. To have the best possible education that anyone could ask for, at the most prestigious and legendary institution across a million inhabited worlds, and to follow in the legacy of countless Jedi before them, who's exploits and achievements are literally the stuff of legends. An offer they can of course refuse without consequence.
The Jedi weren't soldiers until they were essentially forced into that role. A state of affairs that lasted all of 3-5 years (depending on who you ask.) What we saw in the prequels wasn't the status quo, it was a death spasm of an institution that had rotted from within, and they didn't even see it.
That was categorically not what that show was saying.
It's not that the Sith were right or good, and the Jedi were wrong and bad. It was saying that the villain isn't always who you think it is, and sometimes there's more than one villain, both at odds with each other, and both convinced they're the ones in the right. The Stranger was a manipulative snake who was adept at twisting words to get people to see things in ways that suited him. Sol was a misguided zealot who twisted his own perceptions to suit his misplaced and selfish sense of attachment. It was the actions of both Koril and Sol that caused all of that trauma; The Stranger was just there to exploit it.
As for that last point: if the Sith are always the only ones in the wrong and Jedi are always the ones in the right, then the whole story of Star Wars simply doesn't happen, for what is the story of Anakin Skywalker but that of a Jedi that went bad? Or if you want to get into the deeper lore; the Sith Order itself was founded be a breakaway Jedi sect, thousands of years back. Don't confuse the Jedi ideal with the Jedi reality. People are people. They are fallible and prone to stumble, but there's always hope of redemption. That's always been at the core of the entire saga.
