"but its ok to talk about evolutionary unobservable ideas like multiverse etc"

Multiverse theory is part of cosmology or physics, and is not something scientists studying evolution or past life are involved in researching. A quick google shows the ever-imaginative creationists have linked the two for some reason.

Pete never produces anything to back up his arguments, which are the usual regurgitated creationist pap.

At least science is a broad church, and there are many people of faith (such as Mary Schweitzer) who are committed believers. A conversation with them would be most interesting I'm sure.