That is a valid point and I honestly am not good enough, basketball wise, to comment on this. (I was a decent player at the HS level, broke my ankle in spectacular fashion as a Junior, and all my basketball from that point forward was pretty much as a fan - so I am sure that people that played more and in more advanced situations learned more about the specifics of basketball adjustments than I had).
But, that, to me, is less defensive coaching, it is game management and personnel management - I suspect that there were other considerations there - more than just defensive decisions (and I understand that you might disagree, but that's my take on it).
Defensive coaching to me, at least as a numbers guy is looking at the statistics over a large sample size - and when we know that in the season the Blazers had healthy roster with good defensive members on it next to Dame, CJ - the Blazers were more than good enough defensively which tells me that despite the handicap of featuring these 2 smaller guys - over a long season - the defensive scheme the Blazers had that the coaching staff implemented was working and working well.