Personally I think we all have a long way to go when we leave the JW world.
After I left I was still carrying the JW belief system, or part of it, on my back. I was taught that I wasn't to be a part of this world so even up to ten year later I was a fairly worthless citizen. I did not vote, I did no community volunteer work. I didn't donate to others less fortunate. I got out of jury duty etc.
It took a while to realize that our country is just not run by the government and that the government was not able or willing to solve my every problem or my communites. That private citizens were needed to help make things work. The school boards and hospital volunteers. Charities like the free clinic and the food pantry. The little league, the Scouts. City council members etc. etc. etc.
Somewhere in all of this we have to decide if we’re a citizen of this country or not and If we care about how things are run and do we want to make it a better place.
The witnesses' seek to separate everyone from their respective countries. LOYALTY to the WTBTS is the first tenet. The pledge seeks to remind people in this melting pot of a country that just because our citizens have come from every nation and every religion we are still one nation united etc.etc. That message is the ideal but not always the reality.
As a parent I found that the only negative impact the pledge is going to have is having a third grader stand there with their arms at their side, learning early on that they are different.