It's only the scientists who didn't start studying Coronaviruses until two weeks ago who seem to think that having ACE2 receptors is dangerous.
As per the paper, you want to either block the receptor or down regulate it.
There are also many other ways you can block the virus from entering your lungs that don't involve downregulating your ACE2 receptors.
I'm taking a low dose though, in part to hedge my bets, and in part because I don't want to bleed out if I get into a bike accident.
Which country are you in?
Edit: Luckily I own several acres of Hawthorn bushes.
I'm not 100% sure on the mechanism of action on Hawthorn. I've read that it's an ACE inhibitor, but I don't have a good source. But I can see at the very least that it's an elastase inhibitor, which is supposed to be protective against ARDS.
edit: I think proanthocyanidin is the component that is supposed to be an ACE inhibitor.
Sources:
https://www.ncbi.nlm.nih.gov/pubmed/12866623
https://www.phcogj.com/sites/default/files/PharmacognJ-10-25...
Do you take them like some herbal remedies (grind it, add honey etc.etc) or do you process it in a lab?
People make their own hawthorn jam and jelly though, so it isn't excessively dangerous, but on principle it's probably better to take a conservative approach, or at least one that's commensurate with the initial risk.
Because I'm in NYC we actually have them growing everywhere because they are one of a handful of approved small-sized street trees, and they're in all the parks, but regardless it's easier just to buy as a supplement.