How good is David longs Thai?

Hey guys,

This is a question for the native speakers of Thai here.

This is David long from the AUA that learnt Thai using the ALG method (in the 80’s i believe)

https://youtu.be/yIfR5F47IFk?si=84EZycWqRT6bhsb9

How close would you say David’s level is to native like in your language? Do you believe he has reached a near native level?

I think I can find another video if you need a second sample.

Thanks!