Okay, good. I was starting to wonder if I was. I've mowed my lawn 3 times already this year (first in late February). I usually don't need to until much closer to April in my area.
Invasives are invasive for a reason: they outcompete the natives. No one would care about them if they didn't.
That means you need to intervene if you want the natives to survive. So if you really want a no-mow native garden and aren't in some natural desert or such, you're committing to a lot of work to maintain that useful, healthy native garden. Weeding, care and attention, re-seeding, researching, undoing the soil damage caused by years/decades of unsustainable practices, and all that.
I encourage anyone to do it. I totally understand if people don't have the time to do it and just prefer mowing a few times a month to maintain turf grass -- in my area, turf grass is ALSO native and mowing is HOW you maintain it, absent the grazing animals that once would've handled that.
I'm more intrigued by the purple zones. 7-14 days late. I live a couple of hundred kilometers north of that big "late zone" next to Canada.
Springs don't feel particularly late to me, although I also don't have any real data. Farmers seem to be in the fields earlier than they used to, leading to harvest starting earlier than it used to. Gardeners don't always wait for the end of May to plant the way they used to.
On the other hand, my record of pellet consumption (we heat using a pellet stove) shows our heating season getting longer. I just assumed that that was because we're getting less tolerant of a chill in the air as we age.