It's completely reasonable to leave Clark off an Olympic roster and probably better for her development to miss it. A lot of competitions in a short window.
How is not playing in the Olympics better for Clark's development? What is she going to do in the two weeks during the Olympics that will be better than practicing and playing with the best players in the world.
The WNBA schedule is already completely unfair to rookies.
They have all been playing basketball continuously since November, and in May, made a major jump up in competition. Every year, only about 8-10 NCAA players even MAKE a WNBA roster each season. This is a massive change, with basically no training camp.
It just seems way too much go to the Olympics 2 months into that whirlwind change.
I also wouldn't guess the Olympic team is going to get much practice time together. The teams is full of players that have been in the league for years, and many have played with one another. Yeah, there's benefit to being around them, but it would mostly be sitting on the bench watching.
So, there doesn't seem to be a ton of developmental upside that would be better than rest and practice with her own teammates (though I'm not even sure how much of that is allowed).
That's all a guess because, frankly, I have no idea. I only started watching this League a few weeks ago. I trust that the people that have been doing this their whole lives know more than I do.