maybe he is not needed as much as he thinks he is
Not to mention control of the Bosphorus, as well as a tendency to have dalliances with Russia when ignored by the US (a tendency that, I must remind you, predates Erdoğan).
Start paying up 2% of your GDP (assuming you're European), on defence and military, or don't talk. Turkey is certainly paying their share, and paid their share way before Sultan Erdoğan took the throne.
That is why Turkey is not getting F-35s or even F-16s now. Why help arm your enemy?
Alliances are mostly power jockeying. Common values will help to provide longevity to the alliance, but power is primary.
Alliances are based out of pragmatism and a common enemy/threat. They have always been the case since history, whether it was the aggressive Assyrians' neighbours against them, to the Franco-Ottoman alliance, to the Axis alliance in WW1.
But you probably know all this, nothing you said was in good faith and and just come to HN to turn your hatred on random people.