I think most of these arguments are either taken without context or blown out of proportion to make their case and that´s why they are not convincing, at least for me imo,neither Xavier or the X-men have succedenly become drug lords just for doing international commerce with the world at large, just like Wankanda does with the vibranium, Xavier is using a product from Krakoa to help the economy in their country. Yes, they are a fictional country that could in theory sustain itself without commerce, but this fact doesn´t make them villains just for selling it to the world.
If they made the argument of Xavier being unnecesary agressive on his message to the world that he could have send over the TV then I understand it but this exaggerated reaction over Krakoa´s medicine I just don´t buy.
Xavier has absolutely no regrets to do what he does. It hasn't absolutely been not the case before: we saw him hesitate, be ashamed… be a human being.
This…
“Strength is the lot of but a few privileged men; but austere perseverance, harsh and continuous, may be employed by the smallest of us and rarely fails of its purpose, for its silent power grows irresistibly greater with time.” Goethe