No, but remember that a lot of people joined N7 in terms of the multiplayer lore.
So technically, N7 has a lot of species in it now.
Which imo is dumb. N7's are the Alliance Military's elite, which is going to be solely human with the exception of other species that have become citz or similar. And of those, I would imagine there is very few.
That is one way to look at it. For me though I see it as evidence of the narrative placing an even stronger emphasis on being an N7.
All the troops fighting on the ground being made honorific N7s, and the title being treated like it's some coveted position that everyone in the galaxy wants.
Then Ashley/Kaidan being made a Spectre; which turns out to be a minor footnote in either character's life; and their entire role after being granted the most prestigious/powerful military title in the galaxy is they wind up being nothing more than a glorified bodyguard. The narrative makes a bigger deal out of Vega being accepted into the N7 program than it does Ashley/Kaidan's appointment to Spectre status.
I actually look at that completely reversed of what you describe.
All the troops on the ground being made honorific N7's? If anything that has just watered down what an N7 is, because those people haven't proven their skills, they aren't the elite of the Alliance military, but as well I would think the responsibilities / access of the title is a big factor, and they haven't reached that trust factor. So just handing it out at a whim makes it worthless.
Spectre on the other hand, is not just one races elite status, but all of them in the council. You are also not just a soldier, as the role requires much more skills in that regard more akin to super cop investigator of the galaxy. As well, you have authority to conduct business in all council races backyard. There is a reason why it was such a massive step for a human to be granted such a title, which would vastly dwarf the N7. Even if the narrative didn't focus on it that much in the 3rd game changes nothing in which is more important.
In the end I see them as two different types of entities. N7 I see as just how the advertise it, best of the best special forces, similar to Navy Seals and SAS.
Spectre on the other hand is more like CIA Spook, a person that is very capable in combat, but his strongest abilities is Espionage skills, investigating and turning situations into favorable or controllable outcomes. The Spook would also have a much higher security clearance and understand what he is seeing.