I don't view that as a valid reason to object to Sweden joining NATO. Maybe Turkey does, and maybe they won't be in NATO over it by the end of the year? There's 0 chance that Sweden and Finland don't join NATO, regardless of what Turkey publically claims.
> Turkey absolutely cooperated extensively with the US & NATO. Militarily, much more so than Sweden does.
Sure, and that cooperation is expected to continue. Ongoing partnerships have to like, keep going on right? Voting "no" to block Sweden and/or Finland from joining NATO would stop the ongoing partnership and end many elements of cooperation. Frankly, while Turkey is helpful militarily and strategically, the US can do anything in the world it needs to do with or without Turkey. But the one thing the US (and NATO) can't afford is serious dissension in the ranks, and that won't be tolerated regardless of the cost.
It's similar to me with the Taiwan thing. For some crazy reason people think that the US wouldn't go to war with China to defend Taiwan. For a while, people such as myself even were concerned about the Baltic states - then the US and UK moved thousands of troops there. These alliances and commitments are a big deal, especially when genuine strategic interests are at stake amongst nation states.
This is disingenuous. The YPG question is not "no reason" for Turkey. (I disagree about the reason, but it is still an actual concern for the Turkish government).
> if they don't really cooperate with you.
Turkey absolutely cooperated extensively with the US & NATO. Militarily, much more so than Sweden does.