I have to admit, "I want a Bozjan relic weapon tied to the Bozja storyline without having to do the Bozja storyline" strikes me a little like a tank going "I want to play PLD because I like the aesthetic, but I don't want to have to actually ever tank or do my job quests to do it."
I don't mean that to be insulting, but rather to illustrate that sometimes, bits of content are inherently intertwined.
They never said people wouldn't have to interact with Bozja to do the relic weapons. They said they would provide a way to grind the materials for the relics outside of Bozja, and I think they have done that. People have complained you couldn't do things in Eureka like level jobs while you worked at a relic; Bozja allows you to take in a job at 71 and earn XP while you do level 80 content, and the materials can be farmed outside of Bozja. Which, it seems to me, is a genuine effort to address those.
I admit I think they could've made it more clear from the beginning that you would need to progress the storyline to pass a certain step of the relics because the Bozja storyline and the relics are inherently intertwined, just like you have to have completed the 5.3 MSQ in order to do the current raid tier (because story in 5.3 affects impacts story happening after it in the raid series). Because while they never said that wouldn't be the case—and in fact, did explicitly say in previous live letter content that relics would be tied to advancing the Bozja story—they were vague enough that I think some people feel like they were misled because they didn't realize the Bozja story content was tied to the Bozja instance duties.
If you want Edenmorn gear, you need to do savage. If you want the shiny Ultimate weapons, you need to clear Ultimates. If you want the Eureka weapons, you need to do Eureka. If you want the crafter relics, you need to do crafting. And if you want the final form of Bozjan Resistance weapons, you need to engage with Bozja.
Now, that said... Bozja isn't without some serious flaws. For instance, I really, really wish that the Bozja content had a better balance on getting those materials. Having the better drop rates for the materials be outside of Bozja is frustrating; have the mats available outside of Bozja, but have the drop rates better inside. Make Castrum drop 3 per run upon clear! That would keep Castrum active for people who need it to advance the story anyway. (And also Castrum should've been moved to a queue-in-to-it duty like Delubrum Reginae is, so you don't have people wait 45 minutes for a shot at Castrum that never fills.)
Bozja ain't perfect, though I do rather enjoy it. But the relic weapons are part of Bozja, just like Edenmorn weapons are part of savage.