And olive oil is low in PUFA, as the study recognizes:
Several studies have indicated that MUFA derived from plant (e.g., olive oil) or animal (e.g., lard) sources is not equivalent to PUFA with respect to the effect on CVD [24,25,26].
The emphasis is more on coconut oil vs seed oils high in PUFA. Though PUFA is touted as beneficial by the seed oil industry itself, the low carb/keto/whole foods advocates will disagree. The correlation between the rise of the obesity epidemic and seed oil consumption is quite striking, but explainable in the context of total dietary changeover towards more processed food and carbs.
The study is consonant with the general rehabilitation of saturated fats in non-Thai studies.
HDL may increase w/ a corresponding rise in LDL, for multiple reasons, including a lower carb diet w/ saturated fats. LDL may as well, but low carb says that's not significant if low carb is adhered to, the weight's in a healthy range, and the TG/LDL ratio's good. It helps that TG is usually lower. The increased LDL, if any, seems to be of less-harmful larger particles.