[Rinzler89]

Is this a problem Valve should invest in fixing because it's an issues caused by them, or a problem Apple created for not caring about backwards compatibility on MacOS the same way Microsoft does on Windows?

If Apple doesn't care about backwards compatibility on their platform, why should Valve or other developers be burdened with the added cost, especially on a platform with small market share that won't drive many sales?

[freedomben]

Amen. I didn't understand why Apple is one of the only companies that gets to break backward compatibility, and escape all blame when stuff breaks. It always seems to be put on the software developer to update with whatever Apple's new requirements are, even when it's older software (or ancient)!