Just reading it from NYT's article, it claims that TAI sells the titanium to other companies for them to manufacture parts. As far as I know TAI doesn't resell Ti but use them in-house, I am not aware of any reselling of raw materials.
Also "usually" agreements about parts manufacturering...
According to this slide, every EO system designed for KAAN have faceted low-RCS covers, even the DIRCM.
Which would make it the first 5th gen aircraft to maintain stealth and get a complete EO suite. Infact this might be the most complete EO suite in any of the fighters out there
TR-3's are still not delivered to USAF and will be delivered in 2026 (optimistic from USAF perspective) let alone Block 4.
There is no realistic way of Greece recieving F-35's before 2030s