Valve is "messing up" all launches in my opinion if I go by your definition. They always are out of stock pretty fast. Look at the Steam Deck. To this day you have to check every day (at least in Germany) if there is any stock now.

For the scalpers part; I know a lot of people who would pull out a stack of money for anything Valve/Steam branded. I personally needed a new controller and when I saw the release date I set multiple alarms because at some point you just know how fast they’ll be sold out.

In my (german) memory, I could buy my steam deck quite problem free. The supply issues only really started end of last year/start of this year, due to the global RAM shortages. Before that, I can't recall there being availability issues. (at least in germany)