[Toy Soldier]

I do think it probably is deliberate though... thinking about the other characters, right from season 1 their "psychology" is rooted pretty deep and they go into it early e.g Joey's large all-female family, Chandler's parents divorce, Phoebe's mum's suicide + being homeless, Monica's issues with her parents and their favouritism of Ross (eating issues when she was young turning into OCD as an adult), and Rachel having quite obvious "daddy issues" because her dad is basically outright emotionally abusive from what we see and hear of him... and her mum has been "weak" and easily controlled (and admits herself that she basically married for money).

They go into all of that in a surprising amount of depth actually. So the Ross stuff probably is pretty well thought out too.