“The Origin of life and the process by which life evolved are two entirely separate issues.”
Who says this and why do they say it?
ummm...just about anyone with a clue about biology. See here for example (yes, it’s a Berkeley lib site; no, that doesn’t mean it’s wrong just because of that): http://evolution.berkeley.edu/evosite/misconceps/IAorigintheory.shtml
Abiogenesis is about the origins of life. Evolution is about the development of species thereafter. One of the biggest manipulative tricks that Creationists employ to confuse people is to say that evolution cannot be true because it can’t explain the origin of life. It doesn’t have to, and it doesn’t try to.