Probably it. Before Anemos, what was the last relic step that involved a somewhat lengthy grind?
The last step of the previous relic was running hard mode primals. The one before that was a light grind. What was the most efficient method of grinding light? Determining if A1S was on bonus, getting a party together and then proceeding to run it as many times as possible within that two-hour window. A1S had Faust (striking dummy) and The Oppressor. Because of the disparity in ilvls, the only mechanics Oppressor had were a line AoE and puddles that remained on the field. Practicing a rotation over and over, boring content, no chance to take a break without slowing progress. Sound familiar? This step only took about 7 hours, though.
Before the light step was cluster acquisition with a daily and weekly quest for clusters, eliminating any need to grind for tomes unless you wanted the weapon immediately.
However, before the cluster step was the umbrite/crystal sand step. This required a maximum of 24,000 tomes for umbrite, with no alternative to get the umbrite. What was the efficient method for farming umbrite? Aetherochemical Research Facility until the sight of it made you sick. Each run took around 20 minutes. This step involved a lengthy grind, but it was released In June 2016 - over two years ago.
The relic requires a grind, but it can't include any difficult (requiring skill, not time) content or it would lock out players. That severely limits options. Which part of 800 Alex runs or waiting on FATEs to spawn for beast tribes or doing FATEs (the majority of which are grinding mobs) over and over for crystals or farming the same dungeons for tomes, light or item drops was enjoyable? Any answer is going to include the ability to do other things while grinding and not the content itself.
Chaining/killing mobs in Pagos is braindead content. Chaining/killing mobs in Anemos (fuel for the train) was and is braindead content. Asking for braindead content to be replaced with braindead content when the only difference between the two is that one allows for more afking shows that it's not the quality of the content people really care about.
Same dance, different year:
you guys went overboard with this new relic