It's exactly same as mine, pink id number, name in Thai and in English
As mentioned before, using the pink ID, the DL number will be your pink ID number, which in my opinion is the best for different reasons:
1. Your pink ID number will never change. (your passport number changes every time it is renewed)
2. If you have motorbike and car driver license like me, if one of them is still valid (with the passport number) you can’t have both DL on the DLT app under the same username, they are not linked, and you will need to register again every time you get your passport renewed, whereas using the pink ID will remain the same.
At the time of the DL renewal, you still have to show your passport for the visa and personal details, but after that everything will be done using the pink ID. To watch the videos for the DL renewal, you can still able to register with your passport so you can watch the subtitled version.