That's what "asserting" means: to state confidently and emphatically.
But let me get this right. You are saying that there is no such thing as natural selection?
Yes.
That, for example, gazelles which can run faster are just as likely to be eaten by lions as gazelles which can only run more slowly?
Still both survive as they we born don't they and at times the leopard will catch the gazelle, especially the young one that are necessary for the species to survive. If natural selection was true, it might allow the species to survive, but it can't be a mechanism for a change of species.
Also there is no gene for stronger legs. The problem with natural selection is they ASSUME it will cause the species to live longer and produce more kids which will eventually result in a change of species from small changes over many years.
It s biggest problem is offers the science that makes it possible. Now you will say mutations will eventually cause this to happen. Mutations alter characteristics, but the CANNOT change the species.
The albino will remain the exact same species as it parents, but will be missing the normal skin it would have gotten without the mutation.