To paraphrase what I think
@yaakov35 has said:
We’ve already done that. Lakewood, Brooklyn, and Monsey have re-opened in a way that allows both the healthy and the vulnerable to participate in one inclusive society. I know this, because I look in streets, shuls and stores and see both young and old people together, so clearly nobody is left out. The reason we’ve been able to do this is because so many of us had covid that we no longer have to worry about that.
My answer:
1. Your source of evidence is flawed. Say you visit a new town, enter the yeshiva, and see a bunch of boys. Should you conclude “Wow! I see that no girls are born in this town!”? Of course not. The yeshiva is not the place to look for girls, who are probably somewhere else.
You look in a store in Lakewood and see old and young people shopping. Should you conclude “Everyone feels it’s safe to go shopping here!”? Of course not. The people who feel it’s unsafe to go shopping are not going to be in the stores. Or in the shuls, or on the streets.
Question: What would be a better to determine how many people in the community feel that it’s unsafe for them to fully participate in this re-opened society?
2. The re-opened communities don't include the vulnerable in a sensible way You say that many people in the frum communities of NY/NJ have recovered from covid, so it is now safe for the vulnerable people to also return to their pre-covid activities. I almost agree with you! There are just two things missing for this to be true:
There must be guards placed around the walls that surround the City of Frum Yidden of Lakewood, to prevent entry by Frum Yidden of Elsewhere, Non-Frum Yidden, and Non-Yidden. If any of these enter Lakewood, they could inadvertently bring in the virus and infect the vulnerable.
Also, there should be a hotel just outside the walls of the city, so that anyone who leaves Lakewood has a place to quarantine for 14 days to make sure they don’t bring the virus back.
Hint: This isn't happening. There are no walls. There is no enforced quarantine. And there are reports that cases are still appearing in frum communities. So the community has not re-opened in a way that makes it safe for the vulnerable to be part of society.