CS Satmar is not looking to engage every Jew from all spectrums and bring them closer to Hashem.
I am not, never have been, and hope never to become, a Satmar chossid, but you are being very shallow if you think that the Satmar shita was not founded on pure Ahavas Yisroel.
The LR apparently believed that it was important for him to encourage (no… I don’t think I’ll use the word compel) all Yidden to put on tefillin. Ostensibly – at least according to his chassidim – this was done out of his caring for all Yidden. Now as important as tefillin is, it is not ייהרג ואל יעבור. Avodah zarah, on the other hand is, and the Satmar Rebbe (R Yoel zt”l) considered the State of Israel, and anything relating to recognizing it, at the very least אביזרייהו דעבודה זרה. So when he fought vehemently against support it in any way, such as in voting, he was, out of a love of Hashem and Klal Yisroel, caring for all Yidden.
The fact that neither I, nor apparently anyone on this thread, agrees with the Satmar view is irrelevant. His shita, and thus the shita of his chassidim is as much based on Ahavas Yisrael as putting tefillin on non-frum people or any other of the mivtzo’im.