I think it stayed true to its roots. I think Star Trek can, too, after ST:09 III comes out, if it goes back to TV and works to fix the timeline. Then you have a great story, and the potential to explore anything, especially some damn good writing.
How does reinstating the Prime Universe bring Star Trek back to its roots roots or lead to good writing?
It doesn't. They'll never return to the "Prime timeline."
The idea of calling Doctor Who
"Star Trek's big brother" is a peculiar one, and can be based on nothing more than the fact that DW is a couple of years older than Star Trek
. It's not clear that anyone involved with Trek in the 1960s was even aware of DW's existence.