My worthy Russian opponent does this with his Russian opener. He builds two Russian fighters.
But he doesn’t use it to to attack the German med fleet. He uses them for attacking into Germany. He then spends the bulk of his IPC’s on infantry with the occasional artillery thrown in. The two fighters gives Russian a much needed offense punch for his Russian hordes. You could use armor, but then become fodder for the inevitable next-turn German counter.
Then, there was that one game, where he rolled Russian jet fighters on turn 2. But, we won’t talk about that.
And, by his logic, he will never be able to build Russian fighters after turn 1, because he’s too afraid of waisting the IPC’s. So, might as well, have some fun now, with them.