Turkey wont leave NATO, this is just a dog barking as he has elections coming up. Erdogan is looking for attention and maybe some pocket change while posing for his electorate (he has been slowly losing ground lately and many expect he will lose coming elections)
Nato needs Turkey due to turkey's strategic location, the Bosporus and Russia's underbelly / access to middle east/iran.
Turkey needs Nato as we all clearly see Russia doesnt give a fuck, Turkey needs the counterbalance vs Greece (yes their grudge/Cyprus is still an active issue) and to stay in touch as a "western power"
Turkey might field the largest European army in headcount, but as we have seen the last 3 months that doesnt mean much. A large part is young conscripts and There have been many purges in the military since the coup attempt. Again looking at the ukraine war, in general, "loyalist" dont make good commanders andd/or soldiers.
Turkey leaving NATO has been a long time coming, but cheering on removing the largest army in the European area is silly. Turkey will cozy up more with Russia/China, potentially block Black Sea access for nonfrens ( they control the Bosporus ).