I live in a very frum neighborhood and there is a chabad house that most would consider “unessasary” and they are not really welcome in the neighborhood. However I see the people who go there. it caters to a certain segment of the community that might not fit elsewhere. We have enough people and the the chabad house doesnt really “steal” anyone from any other shul
Just because Lakewood is mostly charedi, doenst mean everyone there belong in that community, there are people there who arent really part of the community for whatever reason. Im sure the amount of people who go to the Chabad house in Lakewood is infinitesimal compared to the greater population
And BTW there are other chassidim who are moving to Lakewood. In some of the cul-de-sacs there there are chassdic shteibels right next to yeshivish shteibels (They are not really shitebels as they are actually quite large)