I beg to differ since you're only asserting as much. I argue for the nihilistic implications at greater length elsewhere (links below).

Buddhists must take a leap of faith in thinking we ought to end our pointless suffering by undergoing the Buddhist's spiritual regimen. This is because Buddhism's implicit empiricism is no sufficient basis for any evaluation or for the choice of an ultimate goal (such as the end of suffering).

And I think "over-attachment" is redundant. All mental attachments to our simplifying conceptions immerse us in defective ways of understanding events, which cause suffering.

https://medium.com/interfaith-now/buddhism-and-the-threat-of-nihilism-ab684c34cfb7?sk=46484591fb87e2644bd68cde13026f01

https://medium.com/interfaith-now/buddhist-nirvana-and-the-consolation-of-nihilism-bb847c0c0052?sk=fe14eb1cb805f8b88b7ab2e87fdab208

https://medium.com/gods-funeral/are-buddhists-wrong-to-try-to-end-suffering-d3c023a90cf3?sk=9565bafce058f21a8c053b4a4ae548e6

https://medium.com/gods-funeral/the-daoists-futile-rejection-of-humanism-6f08542f8e23?sk=58e3ebd3c5a646647ef2c7d9836258e2

https://medium.com/grim-tidings/the-clash-between-ancient-and-modern-sages-648ae3092061?sk=1e94a1cc37bccf1fa5108d02d2eacca4