To say that Cam and Myles have seen it all is inaccurate, IMO. I think Cam has played more than 20 minutes something like 8 times in his career and Myles has about the same. In the vast majority of games last year each played fewer than 15 minutes. I'm not advocating for more minutes at this point, particularly if they're not shooting well, but both are pretty green from a development standpoint.
I don't expect either to develop into a 'go-to' scorer or primary ball handler, although Myles did show last year that he could get his own shot on pull-ups. They need to hit open shots and continue to improve in their execution of team defense.