Flying Higher, I agree with you, either remove them or improve the data. The issue is indeed quality of data. You want charts, all charts, to inform the user, pilot, hiker, ships captain with the best knowledge available for their intended use. You do not want a chart to be ambiguous or misleading.
The data is not “unverified” call it “unknown” instead. Even mark it as ruins or leave it out (but that is another argument). We have done the same on land and sea charts for decades.
Whatever you do, don’t leave the pilot in doubt as to expectations or provide misleading expectations.
My reason is also that in the absence of “good” data, gossip, mud maps, hearsay and rumor will fill the gaps - and that most definitely will lead people astray. For that same reason I’m pleased that the VFRG and many charts are now available for free download.