Earlier quoted context omitted.
There are abstractions that are not domain related, those exist as well, and I'd consider them more a part of product design, but software design can benefit from good abstractions at multiple levels and constantly do, but knowing how to use good abstractions and design them is very hard, bad ones or bad use of them will be worse than none. For example, a schema is an abstraction. Choosing to have a strictly defined…
I can almost guarantee you that any codebase with a "Player" class that looks anything like your example is a very poor codebase. It shows me they just didn't know where to start, so they started by throwing everything in there. Abstractions are always about the consumer of the abstraction, not the implementer. No consumer needs everything in "Player", so it's a terrible abstraction, and it's not just a data type or…
And then there is Unreal Engine 5's ACharacter class[0] :-P. I recommend checking the superclasses too.
[0] https://docs.unrealengine.com/5.0/en-US/API/Runtime/Engine/G...