My understanding from talking to {current,former} {Amazon,Twitch} employees is that Twitch has retained a decent amount of engineering independence. For better or worse, it's unlikely that some rando at Amazon ended up with this particular PHP file on their desk.
Twitch is to Amazon as Quebec is to Canada.
This ain't PHP...
My brain sees sigils and thinks PHP. Whoops.
Truth is, Amazon is the parent organization of Twitch, so calling Twitch employees Amazon employees as well is perfectly fine. Just like calling GitHub employees Microsoft employees.
So yes, Amazon employees have ended up with this particular file on their desk.