True, the American form is a bit different. The version of Haredi Judaism in New York is somewhat more moderate, in the sense that it engages with the modern world (even if, perhaps, only out of necessity). Unlike in Israel, where many Haredim reject secular work and devote themselves exclusively to Torah study, Haredim in NYC do do things like run camera stores.

There are also a good number of Orthodox Jews in the U.S. who aren't Haredi at all, mostly under the "Modern Orthodox" label, a position that embraces Orthodox Judaism theologically but doesn't follow the Haredi cultural rejection of modern society, e.g. modern clothing, the science & philosophy of the Enlightenment, etc. One key part of Haredi culture is not only Orthodox Judaism, but a wholesale rejection of the Jewish Enlightenment and modernity, which they hope to insulate their community from by building a parallel society separate from what they see as modern degenerate society. That tends to lead to suspicion of new technologies, especially new forms of communication that might short out the insulator.

the only web site that has open hours. I find that amazing that half the time I look for something there the web store is closed for some Jewish holiday - of which there are many.

I don't see the connection.