Whats the point of giving such amazing weapons in the final mission, if you cannot play post credit?

Had an amazing time playing Avowed and mostly stuck with Grimoire-Pistol and Arquebus build. Best of both worlds with powerul mage magic and the fun of a pistol. I collected every weapon from everywhere thinking once the main story is over, I will try out different builds coz the combat is so much fun.

But after you finish the game, you cant play the game anymore. I get that Obsidian is not known for post credit content, but atleast let me use the weapons I collected from the point of no return.

One of the only major complaints I have with this game. It may sound nit-picking but left a sour taste at the end for such an amazing game