With all due respect, your post contained more errors about Einstein, relativity and physics in general than I would have thought possible in such a short space.
A few corrections:
-Einstein was, first and foremost, a physicist who had a uniquely intuitive understanding of the concepts his theories explained. He was merely an adequate mathematician.
-Einstein’s work has not set physics back.
-Einstein’s work was only tangentially related to nuclear energy. It was primarily related to explaining how real objects actually behave.
-Much of his work greatly advanced our understanding of how the universe works.
-He came up with two separate and independent theories of relativity. Special and General.
-Relativity is not one of the universal forces and his relativity theories did not cause a lapse in work on electromagnetic force theories. Electromagnetism and Relativity are not in competition.
-No scientists claim any theory is valid without extensive and compelling physical evidence. With only math to back it up there is no theory and all good scientists agree with this.
-There are no “modern mathematical models of aerodynamics” that “prove” a bumblebee “cannot fly”.
Those things you cited are all something like urban legends of science and keep getting repeated by non-scientists. They are nonsense.
I agree with this in general, but his "inituitive understanding" was not physical intuition, such as Faraday had of the electric field, but a very deeply considered philosophical perspective. His paper, "On the electrodynamics of moving bodies" was based on the philosophical conviction that Maxwell's equations should be the same for all inertial reference frames.
His ideas for General Relativity grew from his belief in the Principle of Equivalence, and a careful consideration of its implications. He looked around for the math to implement his ideas, realized that Riemannian Geometry was it, and put himself to school in it. I think he was a little better than "adequate" at it, though!
-He came up with two separate and independent theories of relativity. Special and General.
GR is based on SR at its foundation. SR applies in locally inertial frames which are patched together using Riemannian methods into a globally curved space-time continuum.
The Bumblebee story is NOT an urban-legend.
Einstein was a mathematician that later got into physics.