I am not saying it is wrong because it is extreme, just that some people are attracted to extreme shittos for no objective reason. The Satmar Rav and Brisker Rav zt”l came to their conclusions based on pure daas Torah, not through negius. The issues of voting and government funding are not small or inconsequential, although certainly the Chazon Ish, who held of both, was against the medinah.
Shopping is correct, making aliyah with children is very dangerous.