Not really
https://phuket-motorbike-rental.com/the-penalties-for-traffic-offenses-in-thailand/#:~:text=Thailand Traffic fines in 2022 (updated)&text=After paying the fine%2C you,influence of alcohol or drugs.
"Additionally, scooter rental agencies can be fined for renting scooters to people without a valid driver’s license". Random police controls in Phuket are frequent, especially around the Patong, Karon, and Kata checkpoints.
Yet are the rental bike companies held to account, the answer to that is rarely.