Sasha fell on 2 crucial jumps and popped another quad, all in all, while Alena was just about flawless. It’s not so much that Alena was rewarded. She simply got the score that she deserved and was expected from her.
Had Sasha performed her best, she likely would’ve scored over 265 - the score we all would have expected from her.
Figure skating will never reward artistry more than tech because artistry is subjective. There is no possible way to objectively measure artistry. Figure skating would not be a sport then and would be an art.
Sasha knows that PCS is limited and depends on the views of strangers, and the TES limit is completely in her own hands. To be honest, I would also choose the second path.