I laugh a bit about beating another play out for a spot at training camp. I'm not sure what that even means. There's much more at issue when it comes to the selection committee picking the team.
I've had the good fortune to attend a couple of world cups (Istanbul in 2014 and Tenerife 2018) and was able to see first hand what it's like to play under the pressure of the international stage. The pressure is even greater at the Olympics though the participating countries take the world cup very seriously.
In Istanbul I saw Breanna Stewart look completely overwhelmed in the few minutes she spent on the court in Istanbul, and those minutes were when the games were out of reach. Granted, Stewart was entering her junior season at UConn but she was also a two-time MVP of the Final Four and had experience on college basketball's biggest stage. Stewart looked more comfortable in Rio 2 years later.
In Tenerife I watched Kelsey Plum and Jewel Loyd look extremely nervous in the minutes they played. Loyd eventually settled in, Plum did not. I think getting comfortable in international play is more difficult for guards than post players. I also had a front-row seat to A'ja Wilson's nervousness as well. She was a far cry from the player we saw playing for USA Basketball a couple years later.
In Beijing, a very experienced Diggins-Smith hardly played (6 mins/game) and looked overwhelmed when she did.
The roster has to include players, particularly guards, who are experienced playing on the Olympic stage. If Clark makes the team, I highly doubt she'll be on the court for meaningful minutes. She'll be on the team to experience what it's like to be a member of USA Basketball and to understand what it takes to play at that level. She'll be put on the team for the future, rather than the present.