Exactly! Golden Age was characterized by a prolific and continuous stream of new characters and features, and that combined with anthological titles (a character story is usually 10 pages or less) forced them to quickly introduce the action and the thrill, whithout leaving much time for character origins or realistic timings.
There are exceptions, obviously: some Golden Age heroes have their first appearance completely dedicated to their origins, only for them to don their superhero costume at the end of the story. But that's definitely a less common dynamic.
The general Golden Age first appearance is either composed of a few pages of origin story, and then the hero dives into some action, or the hero is already active and there's a quick flashback on his origins, or there is no origin story at all.
This is to say and confirm that the focus of the Golden Age was quite certainly on the action and the exploration of new concepts, and the realism of those concepts and situations was a secondary factor.
On the contrary, in the Silver Age, the focus was mostly on the justification and realism of the character's powers and motives that make him a superhero. And this is especially clear in that sub-period of the Silver Age called the "Marvel Age", because Marvel Comics (pushed by Stan Lee's beliefs) was focused on [1] the "superheroes with super-problems" concept, thus making them more human and realistic and [2] the scientific nature of superpowers.
I'm not actual comic historian, but as a fan that's what I've been detecting during my readings.