This isn’t because God decided that he was going to stop loving you, it’s more that in a spiritual sense you just aren’t taking his calls anymore, and allegedly this is painful.

I never got a call and I'm not in "spiritual pain". He's altogether untraceable, unless you want to play the game of ascribing good things with perfectly worldly causes to the alleged, omnipotent "good things happen because of me"-guy. It makes no sense, especially since there's plenty of gods with similar properties on the market.

the Lake of Fire is just a pop culture oversimplification inspired by allegorical metaphors in the Bible.

It being a place you're sent to is older than Christianity and plenty of Christian sects still believe that it is. Maybe try convincing them first, at least they agree on the there being a god at all.

Also what's libmbo/purgatory then? Another set of metaphors?

It is for this reason why Christians in online circles often say to each other “Atheists do not disbelief what God is, but what they claim God to be”

Atheists don't believe in any god period, that's kinda the whole concept.