Don't be so hard on yourself. Lack of knowledge does not necessarily equate to lack of intelligence.
Here is a 1:1 crop from the image of the sail boat shown before:
I tested the 7Artisans side by side with my Summicron Asph here:
https://www.rangefinderforum.com/forums/showthread.php?t=167382
And there was no difference. So I enjoy using it as it is pretty much the same optical quality, but if something happens to it, I'm only out $200 instead of $3000.
Same reason David Douglas Duncan used Nikon lenses on his Leicas while covering conflict in Vietnam and Korea. He then liked them so much that he used them to cover his time with Picasso in the south of France.