According to wikipedia:
"A
casual game is a
video game targeted at or used by
casual gamers. Casual games may exhibit any type of gameplay or genre. They are typically distinguished by simple rules and by reduced demands on time and learned skill, in contrast to more complex
hardcore games.
[1] They typically impose low production and distribution costs on the producer.
Casual games are often played on a personal computer online in web browsers, but are also popular on game consoles and mobile phones"
Overwatch doesn't fit that description. And "capable of playing on integrated graphics" is a very broad term.
But I don't know why I'm wasting my time commenting about
gaming on a Mac, so in that aspect you're right.
I should've known that Mac "gamers" would whine about it.