I'm not entirely convinced by them. Although I think these ten are describing real circumstances of delusion, I think they're poorly worded by suggesting such a thing as "excess virtue".
In the Upanisa Sutta
, the Buddha suggests that faith, joy, rapture, tranquility, happiness, concentration, and knowledge are all supporting conditions for enlightenment. If, then, any of these things is further supported, its corrollaries are supported too. I don't see a distinction between "concomitants of insight meditation" and attainment; progress in meditation is not attainment of the true path?
When I see that list of ten defilements, they seem designed to support this preconception: "realizing the three characteristics does not lead to a joyful feeling". It does not lead to misery, melancholy, or equanimity either.
The fetters of pride and delight encompass the list of ten well enough, so its creation seems motivated merely by sectarianism. That is, rather than being aimed at subduing a particular problem, they are aimed at explaining
how a heretical monk might have such great mental qualities. Simply calling him "proud" would probably not be very persuasive.