It's also entirely unreasonable to expect that kind of crafting here.
D&D crafting is, for the most part, a "magic item store." You put in X, Y and Z and get out the item you want.
If they wanted us to be able to do that, they'd have stores that sold those items.
We don't have "crafting." We have "prototype crafting" which is in the game in place of a set of static raid loot items for a high-level raid. So yes, it's for high-level characters.
Crafting, when it's added, will presumably be for a wider level range of characters.
Saying this prototype crafting system alienates 50% of the player base would be the same as saying the addition of Gianthold and the Raid there alienates those same people. Mod 6, and the prototype crafting system it includes, is high-level content.