Personally I think it would be kinda bizzare lore-wise for a Bards to be carrying around anything technologically advanced. It's a Gridanian profession that only really saw small military use in their army (because they couldn't mass-produce magical singing Archers unless said Archer had already experienced war), so it would be strange for a high-tech (and by tech I mean actual technology, not stuff that utilizes aether like the shiny relic bows) weapon that's specifically designed for a Bard to exist.

I mean, in terms of bows it's less of an issue for there to be electronic, high-tech weaponry because every nation has Archers, including ones that actually develop technology like Garlemald. But only one has Bards, and it's not what you would call the most advanced in terms of technology.