Could heavier German pilot losses derail Barbarossa?

Could heavier Luftwaffe losses over the North Sea leave Germany unable to support Operation Barbarossa?

Yes, German production and training limits make that a major problem; severe British dominance could even change whether or when Barbarossa is attempted.

German aircraft production and pilot-training limits are a serious constraint. Jet interceptions over the North Sea could destroy aircraft and trained crews before they support campaigns elsewhere. If British forces dominate that air campaign, Germany may delay or even reconsider Operation Barbarossa. Any delay would in turn give British ships, aircraft, and industrial programs still more time to mature, making the counterfactual increasingly difficult to predict.