The actual tech would also have changed
Or then not. It could be argued that space exploration in the Trek universe only becomes possible after one achieves a threshold level of tech (in propulsion, defense and a couple of other key aspects) - after which most of the pressure to develop better tech goes away. OTOH, it could also be argued that a certain level of tech is handed to a civilization on a platter once it starts trading with the interstellar community - but that it would be extremely unlikely for the upstart to improve upon what it has purchased in any noticeable way.
Timo Saloniemi