If it’s just ahavas Yisrael then why don’t the litvish or chassidish do the same? ( Maybe they are lacking in AY).
First of all, it’s not the Yuds anymore. Lubavitch is not the only ones going out anymore. The thing is, that there are so many Litvishers, that they don’t have to go out one by one. They can actually send out a Kvutza at a time.
But really, it’s a question of priorities. I know of Shluchim, that if they just had the opportunity to sit Al HeMenucha VeAl Hanachala in some upstate shtetl, would have become tremendous Rabbonim. As it is, he’s out there working as a Chabad house director[1]. On the other hand, as a Chabad house director, he’s had a direct influence in tens if not hundreds of Mekuravim over the decades, who are now fully Frum and went through Yeshivas. The question is, what’s more important?
So we’ll be proud of the shliach, thanks to who’s Mesirus Nefesh there are now tons of Mitzvas being performed by his students, and his student’s students, ad sof kol hadoros.
There’s a famous story of a certain Gaon who was asked to take the job of a Rosh Yeshiva. He didn’t want to, since he was scared that it would hurt his own personal growth, as he’d have to spend his time preparing Shiur, saying Shiur and answering questions. So he went to the Chofetz Chaim. The Chofetz Chaim told him of a Mashal of an expert shoemaker who was offered a partnership in a shoe factory. He didn’t want to take it, since his shoes were exquisite and expensive works of art, while the factory would produce cheap and shoddy work. But his friend changed his mind. He told him “listen, you make 100 Ruble a shoe, and make one shoe a month. But if your factory will produce 5,000 shoes a month, even if each shoe costs only a Ruble, you still made 4,900 rubles over that month. Even though each shoe’s worth less, the quantity overrides the quality.” So the same thing here, said the Chofetz Chaim. Your Torah study’s great. But the Torah study of a thousand Bachurim, however puny each individual is relative to the Gadol, is still worth it.
But on the other hand, it wouldn’t surprise me if he his children know about the Metziyus of sports (not that they talk about it in their home, Chas VeShalom, but you often can’t help but overhear it from your congregants) or US politics (same as above).
[1]. Just for the record, he still learns, is a Rov, and all of his children are Frum.