That is a fair question. Whether a GM is good or not is subjective. For me, I think Atkins is an above average GM because I like most of the moves he makes, and the ones I don't like are not egregiously bad. I did not like the White trade. I did not like the Chapman extension (taking some risk with little upside). I did not like the Berrios trade. I did not like Merrifield trade. But I thought they had an OK chance of working out or might be inconsequential.
I liked the Berrios extension, the Springer deal, the Gausman deal, the Ryu deal, the Chapman trade, the Bass + Pop trade, the Cimber trade, the Richards trade, and not overpaying for Semien or Ray after their career years.
My opinion of Atkins will not change based how these moves work in hindsight.