Yes. Do you have any evidence they use contractors for Steam?

Can you do basic math on the number of support tickets Valve is handling to answer that question for yourself?

if not:

https://www.valvesoftware.com/en/jobs?job_id=113#:~:text=The...

> Can you do basic math on the number of support tickets Valve is handling to answer that question for yourself?

Can you? Do you even know that number?