There's nothing fanboi about what I said, that's simply historical insight.
See, common conventions about "How pilots are suppose to behave" doesn't always pan out when you look at history and realize that pilots were every bit as ingenious in pushing their planes to the limit as we are in games.
We even have WW2OL players who complain about stukas turning off their engines prior to a dive so that AAA guns won't hear them coming; they say it's unrealistic because it doesn't follow common conventional wisdom about how dive bombers are "suppose to behave"... but then you look at the Russians during WW2 and find that there many of their bomber pilots DID turn off their engines and glide over their target so as to avoid alerting the AAA emplacements.
Another attack of "common wisdom" we see a lot is the belief that dogfights below 3km are unrealistic, that real life pilots would never go so low and expose themselves to AAA or bouncing.
But the reality of WW2 history is that fighter combat regularity took place below 3km in areas where high levels of CAS were being undertaken (Specifically the African theater and Russian front).
You see, the CAS planes are at that altitude, so the attackers and defenders will have to be drawn down to that level for fights.
Many people tend to erroneously associate the high altitude clashes over Western Europe between strategic bombing and german interceptors as what pilot behavior is typically "suppose" to be like.
There's nothing stopping me from flying a stuka at treetop level in AH either, aside from the fact that there isn't actually anyone on the ground for me to spot and bomb, so why would I want to fly that low?
WW2OL puts no arbitrary restrictions on what players can and cannot do. There are advantages and disadvantages to flying low, just as in real life.