

The community is very open about warframe.market existing though. Like an auction house for player trading across all servers. So if your relics drop bad items. Sell them on the market until you can eventually buy the one you want.
Other games do thinks like soulbound/account bound stuff. Not everything in WF is tradable, but most things are
You’re right that you can’t personally farm them, but you can still end up getting them from publics. The old relics are still operable. I have hundreds of old relics that I open as fodder, as do other regular players. And ofc trading. The surplus of old relics helps keep down trade prices because they’re still trickling into the market, albeit slower.
A better example is prime accessories. These are real-money only, and can only be bought from Prime Access (when a Prime is released) or a Prime Resurgence (Prime temporarily back for sale a year or so later). Stuff like Octavia Prime’s shawzin/sitar being $35 or gone for (effecively) forever.