An executive order is not the same thing as declaring a national emergency. The latter is far more of a a power expansion, and possibly undercuts the meaning.
It is designed differently.
But yes, Obama's uses of executive orders was a bad precedent to set. AS was is attempt to silence whistle-blowers from talking to the press. You can rad about that here (it is an interesting, if depressing, read):
Wilson's use of internment camps for German Americans in WWII was a dangerous precedent, which led to Japanese (as well as German and Italian in far lesser percentages)internment camps in WWII.
Though Wilson likely got the idea from Canada's Enemy Alien act was actually stricter and more problematic than Wilson's (not easy by any means), but they copied our Japanese camps... so it evened out
Hell, Lincoln's suspension of habeas corpus was a dangerous precedent.
I never said Trump was the only one who was capable of setting bad government traditions. It really is problematic no matter who does it.
And I know we have two other discussions up in the air, but I will have to get back to them later (stuff in my personal life, nothing horrible, just time consuming. You get it, we've all been there), so I will get to them in the near future.