I think an example of a team using the triangle is the Timberwolves. Granted they don't have the personnel, I can see they also don't know how to execute the triangle. More often than not, they will fail.
I will rewind back to the 90s Bulls. Another reason the Spurs will not make the triangle work. Not only every player has to have high basketball IQ and creativity, they also have to be good shooters. The 90s Bulls had shooters like Paxson and Kerr playing "point guard". And they don't handle the ball often. The problem is that Parker is a ball-dominant guard who does not hit threes on a consistent basis. The triangle works only because of spacing because of shooting and ball movement, so a ball dominant player would struggle in the triangle.
Granted our star players have high basketball IQ, but if one of our stars do not fit the skillset, the triangle will fail. And our role players don't know what is execution and can't even execute half the playbook, with the triangle, things become complicated.