Wether that opinion is right or wrong can't be told for sure. Most men (as opposd to elves) myth think they're wrong and that the way to 'something better' is forward.
Vivec also agrees with men about which way to sway too. Heck, he even outright says they have been wrong since the beginning.
As for Tes96, I'm going to attempt to use a real world mythology from ancient times to try and explain a bit of what's going on in the merish mind. In ancient Greece, they believed everything was at first chaos, then from chaos was born the sky and earth. From the union of the sky and earth came the titans. From the titans came the gods. And from the gods, the heros. From the heros, normal humans. It's highly abridged, but as you can see, for each new generation, they became a gradient lower. From being everything, to two halves of everything, to being being an individual thing, to being a sphere of influence of each thing, to the mortal children of the spheres of influence, to unimportant nobodies. To the elves, they see themselves as the 'normal humans.' What they're trying to do is go from 'normal human' to 'titan.' The dwemer tried to accomplish this by becoming the Numidium.
In TES, it's like the Godhead-->Anu/Padomay-->Anueil/Sithis-->Et'Ada=Aedra/Daedra/Magna Ge-->mortals. The elves want to move from mortals to Et'Ada, when there was no Nirn, Lorkhan didn't 'trick' the aedra to sacrifice their power, etc, etc.