Eisenhower actually had reasons for the apparent conservatism and plodding pace of his administration's space program.
Whilst I agree in principle to the majority of your "reasons" the awful truth is that Ike wasn't able to process the "big picture" despite his many forward looking initiatives
Ike was fully unable to handle, or it seems understand America's "Sputnik Panic" and his attempts at "spinning" the aftermath fell flat. Vanguard had to fail and do so publicly and spectacularly before he even considered giving von Braun a chance.
(He specifically instructed the council that was deliberating the choice of which satellite program that choosing an "ex-Nazi" and obviously military program was out. This not only took ABMA out of the running but the Air Force Atlas as well. That pretty much made the ONLY choice Vanguard)
NACA could never have handled or run a satellite program. It simply wasn't set up to nor had the management skills to run such a program. When it was folded into NASA they STILL had to bring in a lot of military program staff to gain the core competencies needed. And Eisenhower was the one who insisted that the original NASA astronaut pool ONLY consist of male military test pilots, which NASA itself wasn't going to do originally.
Lastly though Eisenhower deplored the "military-industrial complex" HE specifically created it and further his policies created and maintained a very high level of inter-service rivallry that was VERY detrimental to US defense policy even to today. ("New Look" defense policy was a definitive statement that put the Army and Navy on notice that they were considered "obsolete" made worse during Ike's second term when his hand-picked Secretary of Defense placed ALL ballistic missile development under the Air Force when it was the ARMY which was at the time on the forefront of development and cut the Navy out entirely! This when it was quite plain that Army, Navy and Air Force requirements and operations would preclude a "single" missile development program under a single service)
Ike's main "problem" was he was very much a transitional President between pre-WWII defense strategy and post-WWII politics and it shows in his priorities and policies. He looked like he was a "post-war" politician but he was actually still stuck in many ways in pre-war mentality and he either couldn't or wouldn't change to meet changing times.
He made Nixon into the first "modern" Vice-President and then seemed to change his mind in mid-stream and Nixon IMO had more of a grasp on the political and social realities of the late 50s and early 60s.
Randy