Agree they shouldn’t make decisions based on presuming everyone has access to rare loot, it should be done with the tiered items squarely in mind, and just a bit of heed paid to the rare things to make sure nothing inadvertent happens.
Csword and Colossus Sword aren’t on the same tier of rarity, although clearly your own situation shows if months go by without a csword it is still rare, just not rare rare, if you see.