You are most correct and you hit a very important point - downregulation of ACE-2.

This is preliminary non published research using an extract of dandelion. Extracts are a way of concentrating the active components found in plants. There are all kinds of botanicals and other substances that are being looked at that show similar mechanisms of action - competitive binding of ACE-2 receptors used by the spike protein from either the vaxines or from SARS-CoV-2 infection - including any of the so called "variants." Which said variants I believe are more hype than reality. They need some way to increase vaxine usage and to explain increased deaths and injury due to the vaxines. They will kill two birds with one stone - pun intended.

One of the concerning things the article mentioned that you make note of, and of which I have yet to find any reasonable answers for, is the question of the affects of downregulation of ACE-2 due to competitive inhibition of the receptor site - especially over the long term if people are trying to use a whole host of preventatives to protect themselves against spike protein.

We do know that downregulation physiologically affects the renin–angiotensin system (RAS). RAS is a hemodynamic and biological system that regulates blood pressure, plasma potassium, and the stability of pulmonary epithelial membranes. The system involves two antagonistic pathways to achieve balance - one is the angiotensinogen pathway and the other involves ACE-2.

We believe that major imbalances in RAS induced by the downregulation of ACE-2 is an essential element of unfavorable evolution in patients with COVID-19. The biological marker of this imbalance appears to be hypokalemia - low potassium. We just don't know and people are attempting to try any so called "treatment" to protect against not only SARS-CoV-2 infection, but also the affects of spike protein on the vaxed, and by exposure to those that have been vaxed. All this gravitation towards any remedy inadvertently may eventually lead to us shooting ourselves in the foot.

Dandelion tea and extracts have been consumed throughout history. But, it does not come without contraindications. People that have eczema and allergies to ragweed may want to stay clear. Also, people with bleeding disorders and that are already on blood thinners should avoid it - it could increase bleeding. Another issue with dandelion is that it affects the metabolism in the liver of certain drugs. So people taking medications have to use dandelion with care.

The area of hematologic complications is of concern to me with regard to the increase in adverse reactions to vaxines and the disease called COVID-19 mostly because of the duality of having clotting while at the same time having reduced platelet levels that causes bleeding. This has been a hallmark of this so called respiratory infection called COVID-19 since the beginning and has had me scratching my noodle trying to fit a lot of pieces together that did not quite seem to fit.

As with COVID-19, vaxinated people have been showing up to the ER with these same comitant symptoms which complicates treatment options - especially with cavernous sinus thrombosis in the brain while platelets are in the tank. This is one of the reasons I have to conclude that this is not something that originated in nature, but was a very carefully AI designed bioweapon - one that has many moving pieces that allude detection and which does not have a single causative factor. Although that is what they want us to think.

So, given the fact that there are probably better alternatives out there that can act as antiviral agents that interfere with ACE-2 binding of the spike protein, I don't recommend dandelion, especially concentrated extracts, for anyone but the healthiest. I have always been careful with dandelion and licorice root because of possible reactions - namely increased blood pressure.