The Sects of Atheism

[Angrboda]

But souls and the afterlife are always linked to different Gods and religions which is something that the definition of atheism doesn’t allow. 
So maybe you’re an agnostic atheist?

The fact that they are linked together for some other people doesn't mean that they are or need to be linked together for a specific atheist.  

Since they don't need to be linked for an atheist, you are wrong to insist that an atheist can't have an opinion on them.

You are effectively arguing that one person is bound by what another person believes; that's simply not the case.

Well then don’t describe yourself as an atheist. Maybe agonist atheist?

That wooshing sound you hear is the point going over your head. There is no legitimate reason I would need to act as you seem to think that I must. Why would I?

In general understanding, there is nothing about the concepts of a soul and an afterlife that requires that they be linked to a god; so the fact that for some god-believers they are linked is a red herring.

And for your information, a few years ago I was a Shakta Hindu who believed in the goddess Kali, but did not have a belief in souls or an afterlife. So, no, they aren't "always" linked.