I haven’t tried it on monsoon, so I can’t say. It’s possible–testing is the thing that bigger companies seem to like to cut corners on to save money and get things out faster, so it’s entirely possible. But at least it sounds like they’re taking the feedback to heart, so it could still end up pretty good with some rework.
My wife and I have been experimenting with making our own. So far, my favorite is chamomile, lemon balm, elderberry, and a little stevia.
I tried a new one last night that might take the lead with some tweaking: nettle, lemon balm, ginger, and cinnamon. Gotta get the proportions right, but the combination was pretty good.