Nordwalde variation Kings Gambit 2...Qf6
It is fine because NO ONE will know the correct line against it. But white can get an extremely dangerous attack and probably won game with this sacrifice:
6....Bb4?! is not forced and your line can be avoided with Bucker's 6...f6
In which white has full development and a strong center AND a massive iniatiave, all for a pawn. Engine evaluates 6...f6 at about +3 for white, which is basically lost.
I always went for Bücker's secondary line: 4...d6 5 Bc4 f6, though the engine is now telling me that's pretty dodgy as well.
From my experience I can tell if a line rings hollow or not: Ask yourself, can I play the line against a well-prepared opponent a second time?
In this case: no guys, no oxen and wain ropes will ever bring me to play this line.
6....Bb4?! is not forced and your line can be avoided with Bucker's 6...f6
In which white has full development and a strong center AND a massive iniatiave, all for a pawn. Engine evaluates 6...f6 at about +3 for white, which is basically lost.
And your point is what?
That some sweeping generalization and an engine evaluation makes your original statement any less wrong than it was?.....I am not sure because at no point did I say 6...f6 was a winning move only that your Youtube sourced 6.....Bb4 was not forced.