I think you are correct as regards to the jws loving just their kin, and not those who left.
But who said that the Bible teaches something better? The "Love your Neighbour" command is for ISRAELITES. If you want to see how ..."loving" the Israelites were as regards to foreigners, read Judges, read Joshua, read Numbers; heck, read ANY random passage from the Old Testament. The hate for, and the (in cases) KILLING of, non-believers was a command from Jehovah himself. With regards to this, we can't blame the Jws for doing nothing more than what is commanded in the whole of the Old Testament: Love your own, KILL all the rest; if not kill them, at least enslave them, and take their virgins for "own use". Luckily, JWs don't actually kill the rest right now, not because they wouldn't do it if Jehovah commanded them, but because they are waiting for God himself to do the 'dirty work' in Armageddon.
Hate, and if possible, killing of the non-believers, especially the apostates, is in the heart of ALL Abrahamic religions. Islam still kills those who defect to another religion. The only reason Christians don't kill anymore, is because they've lost the political power required to do so. If the JWs had political power, they would kill also. Since they have only spiritual power over members, they are restrained to killing only 'spiritually', i.e. disfellowshipping+shunning.
And as for Jesus, he did say "love one another", but guess what! we was referring to his DISCIPLES at the table. Love "ONE --> ANOTHER", not love the Gentiles! Instead, Jesus, as a faithful Jew, regarded the Gentiles as "dogs" and "pigs" if you recall. Plus, he often said that he would return as King and make the nations tremble, melting from fear; he would set them apart, as sheep from goats (where's the impartiality? This is the definition of partiality), we would save his OWN, he would KILL the rest. Yup, no big difference from the bloody Old Testament here. So the faithful jws who await the Armageddonian World Genocide, they may be sick, but this is what all the monotheistic religions require, actually.