But if we're not seeing an overwhelming outreach to fix something - it likely isn't broken.
Do you not spend a lot of time in tabletop spaces?
One can argue that the internet isn't strictly representative of the greater DND audience, but you also don't have anyway to speak to what the greater DND audience cares about. Not even WOTC truly can, as their best tools for doing so all distort reality in some way (which is just a consequence of what they are).
But what can be held up as a objective measure is that people who go online and talk DND like this are the most passionate parts of the audience, and the most highly tuned to the actual game design underlying these issues.
And these people are
constantly arguing about martials vs casters, and while theres seldom a consensus on how to fix martials (why the debate is perrenial), there is one on casters generally being too powerful relative to them.
As a game designer you need to be conscious of (and have) your own vision, so while I personally think magic needs to be nerfed into the ground and casters along with it, that isn't necessarily the approach WOTC should take. But neither is leaving casters and magic alone.
That is the norm I'm referring to, by the way, is the disproportionate amount of power casters wield. And frankly, I don't consider combat magic to be the issue specifically; outside of people underselling how effective Martials are in combat, how Casters fare in combat just isn't an issue in general.
Its all the utility magic thats really causing this problem. All these low cost buttons that only exist to turn off entire game mechanics. Your goodberry and tiny huts and all that.
That crap needs to be nixed and fast, as does the ridiculous things at high level like Wish or Simulacrum.