Actually, this is completely in line with how SE designs content. Things are meant to be done in multiples of 3: 3 days, 3 weeks, or 3 months. Stuff like relic/anima is always designed to take 3 months to complete so there's some kind of long-term goal for players to work towards, and the steps will be nerfed when the next phase of upgrades are patched in.
Edit: It takes about three weeks to earn enough gated tokens to buy a new weapon, for example. It took about three months to grind all the stuff you needed to finish relic, zenith, atma, animus, and zodiac. Only the zeta step could be done in a few weeks, if you were exceedingly efficient at light grinding.
Also, KaitlanKela, the relic weapon leapfrogged BIS with raid drops during 2.0's lifetime. I don't expect that to change going forward.