No Not true.In 1940 the UK produced 15,000 aircraft the Germans 10,000. This didn't all happem after the late in the Battle of Britain.The Brit’s only started producing more aircraft than they were losing when the Germans focused on the blitz. In retaliation for the Brit’s bombing Berlin.
Single ENginee fights of Hurricane and Spitfares maybe aircrat losses exceeded profuction briefly but no more so than the Germans.
During the critical period it's pilots more than aircraft production (as the RAF started with more spares) and the Luftwaffe was always been grond down more as it lost more of it's pilots per down aircraft (as a BF109 shot down over England means loss of pilot when not necessarily so for the RAF) In reltaive strnegth terms the luftwaffe was always losing ground, t(though the internal thinking of booth sides was on available figures rather than the actual true numbers, it felt very desperate for the British)
Obviously the navy was the key factor. They needed to knock out the airforce to have any chance of getting a corridor across the channel. That never happened, but it could have if things broke different. It’s certainly not an alien space bats proposition.
Knocking out an air force 100% was always a pretty difficult near impossible task. At the very least the RAF could control how much of their air force was commuted. A core element could always have been prosevred by removing it northwards. The Rate of attrition simply was good enough to remove RAF as effective force in the time period even if the Lufwaffe was winning (which it was not)
Crossing the channel and landing an effective force even with clear air superiority with the means available to the Germans in september 1940 is pretty close to alien space bats, barely escorted canal barges.