While it’s not a good indicator of overall Japanese level, it is a fairly reliable metric for how long you’ve been doing the WK specific SRS system and what kind of perspective that provides.
I’ve only recently started noticing that the complaints and comments within level brackets have been fairly consistent and that things that would hold true for say, level 10-20, may not hold up for levels 30-40.
The other thing it indicates is longevity. You’re more likely to see people stick around once they’ve hit 30 and beyond. I’ve seen tons of resurrected threads where the OPs left and never came back.
So its like, I’m happy to see you here and I hope you stick around, but realistically the odds are not in favor of that.