Yes - grace is outrageous, that is its nature. But actually, to tie it to another post a bit further back, it comes down to God's desperate and absolute love for his creation and longing that they be reconciled. That poster was talking about her children and how she couldn't imagine ever wanting to punish one of them, even if they went well off the rails, so couldn't reconcile in her mind the idea of a loving God who 'sends people to hell'.
But that's just the thing. God is just like you, that loving parent who longs, yearns for her children to be fulfilled and to be in good relationship with her. And would do anything and forgive anything to bring that about. So you have two kids: one is well behaved and lives well and is easy to forgive for the little things. One goes off the rails and actually hurts the parent badly. Yet the parent's huge love for the child can actually overcome that hurt and can say 'i forgive you' because she cannot do anything else.
Grace is like that. It will forgive the worst of sinners and welcome to prodigal with open arms. The narrative that has become about God sending people to hell has it upside down: God was always about welcome and inclusion, about reckless love and scandalous grace. The only place that Gehenna (NT translation of hell which doesn't actually mean eternal torment at all) comes in is when people don't make that choice to ask forgiveness and choose to be reconciled to God.
It would hardly be fair of a parent to force a child to be with them and spend a long time with them when they really hated them, would it? It would be overcoming their own autonomy and making them do and be something they were not and didn't want.
God is the same. Yearns for all to want to be with him, but will not force them. That's grace: beautiful acceptance and forgiveness but never forcing a will and making people who really don't want to spend eternity with him.