pukunui
Legend
Precisely this! I am happy for this to be the default approach. To go back to the older approach thus requires the DM and their players to agree. It makes sense in a world like Theros, for instance, where the gods are visible and active, to make it so a cleric could lose their power if they deviate too much from their god's tenets / directives. That's the setting logic that @Micah Sweet refers to - and I think it's important for everyone at the table to agree to that kind of thing in advance.Eberron back in 3e had clerics who didn't match the alignment of their Gods, and Keith Baker explained that's just how things are. They're keeping things in line with how they've been in Eberron, and it makes things interesting at least with NPCs in that a Cleric of a Good aligned God might be the secret villain.
But I think the Eberron approach is a good one as a baseline.