Excellent point. I had forgotten about this. I work for a non profit so I’m ok, but yes you should absolutely check the terms of the license before using. On the upside, almost everything is markdown files in regular folders, so you can fall back to vim anytime.
For those not in the US: it may be covered, but normally it’s a separate insurance plan and not covered by your regular health insurance.
It also varies what type of “dental” care. Some mouth/gum surgeries may be covered by the health plan. I think most dental plans cover checkups. All this varies wildly with your employer and insurance election, though.