Penelope and Schneider's relationship
There are two ways to look at this. On one hand, the series could exemplify that a guy and girl can be close friends without it turning romantic. But on the other hand, Schneider and Penelope have both expressed attraction for each other in the past, and they could have an interracial relationship built off of unconditional support and an already established friendship. No matter which side you're on, there's no denying how important they are.
It calls out racism
Alex ends up not wanting his family to come to his games for fear that people will continue to make fun of him and tell him to "go back to Mexico." The whole storyline is heartbreaking, but it's a real example of racism in today's society.
It deals with addiction
Schneider's is the most light-hearted person out of all of the characters, so seeing his struggle with addiction was especially heartbreaking. But the show managed to deal with it in a mature way that helped spread awareness.
It portrays healthy relationships
The relationship between Elena and Syd is both healthy and heartwarming. They always respect each other's boundaries and just want the other to be happy.
Mental health is taken seriously
Instead of brushing over depression and anxiety, the show takes it seriously and understands that it's a real mental illness. Penelope comes to terms with the fact that she may have to be on medication forever, but she can still live a happy and healthy life.
There's non-binary representation
Syd's inclusion in the series is essential for more reasons than one. Their relationship with Elena is important as well as their identity as a non-binary character.