Bogey isn’t old given his role/what he does.That's what happened when you have a squad full of older players. They are gonna be inconsistent cuz their better days have passed.
Not just talking about Bojan. But him, Ingles, Conley and even Favs will give you good numbers on one night, and be complete non factors on another. That's how things are for older players past their prime. You simply don’t/can't rely on them for 30min every night. Their bodies won't allow it. Like you said, rest them. Its not a new concept. Almost all teams rest their older players for them to stay in game shape. Russ, CP3, KD, Lebron... I don't see how Joe, Bojan or Mike is any different. If them staying on the floor is just to be a complete non factor that hurts the team, id rather see Oni or MorganBogey isn’t old given his role/what he does.
The guy had the best season of his career last year. He's coming off of wrist surgery and hasn't played basketball in 9 months. Just give him some time.