I just binged the show a few weeks ago for the first time, and while that was my impression as well, I then realized that while being unrealistic in a literal sense, it represents well that a lot of major "big things" were always kind of in the air for innovative people, and in the end a mix of luck, speed and execution wins. On the realistic side, they stand for all those people who tried to be in that group of winners and lost.

On the negative side, I also thought that sometimes makes for sloppy writing and the feeling that the characters are basically cosplaying history.