This is not a risk at all. This is a great advantage of the fraction, which allows you to call such a powerful artillery so early.
"is also not a universal or even valid argument" Of course, when you are a fan of OKW, this is not an argument. And if you care about balance, this is a fair claim. The USF should get a calliope outside the doctrine, or get a Scott as early as possible. Let the USF also put itself at risk. Risk giving a lot of reward.
What Sander is saying and you clearly didn't understood is, if you go for early stuka and they won't pay off, you'll just get steamrolled by med armor and you'll have be up to 300 fuel behind with armored response.