You're comparing apples and kumquats, or whatever fruit happens to back you up, to make your points. They never said that all weapons should be equally easy to get. They said specifically that getting from the start of the Anima quest to the 210 relic at its release was intended to be the same difficulty as clearing Alexander: Gordias (Savage) at its release.

Speaking personally, clearing Savage is literally impossible for me since I don't have a static, can only play in spurts of 30-45 minutes, can't use voice chat, and have a computer with a dying video card that seizes up randomly lowering my FPS to 1 for a couple minutes every so often. Grinding up a relic is entirely possible for me. So, for me, the relic is infinitely easier than clearing content that is literally impossible for me to clear.

On top of that, did you see the stats of the number of people who cleared Alexander: Gordias (Savage) when relics came out? It was something like 0.1% of the players or something. Whereas, anyone can get an anima relic if they put the time into it. It's not hard. At all. It's just a time sink.