Not to derail, but I don't think that's quite right, because his views and way of life only partially line up with those of the hobbits, and he doesn't have every trait of theirs in an extreme form - or even many. Tom is basically, a straight-up return-to-nature utopian anarchist. He thus represents something more extreme than the hobbits, and which doesn't match up with the frequent small-minded-ness, xenophobia (not so much in the Fellowship hobbits, but certainly hobbits as a whole), and so on. He's lived free since the dawn of time, and he wants to continue to live free. Tolkien himself expressed strong anarchist sympathies (much as that may shock people). In letter 52 to his son, he specifically calls himself an Anarchist and also offers support for what would today be regarded as luddite terrorism (workers dynamiting factories etc.).
Well, let's be clear, when I say "no-one", I mean "a tiny percentage of players", not literally no-one. Apologies if that was confusing.
But your players are freakishly unusual, if that's true. Because every single time we've seen figures on this kind of thing, the number of players playing them is laughably small. Discounting one I made recently basically to be difficult (he's actually turned into a cool character lol), I've seen 2 halflings played in 30 years of D&D, and whilst that's more extreme than the figures we've seen, it's not much more.
EDIT - Wait you're saying 3 out of 19 is "extremely popular"? That's a lot higher than their popularity has ever been shown to be generally, but I still wouldn't call that "extremely popular". OTOH it's as many as I've seen played in D&D in my entire gaming life so there's that.
This is a perfect illustration of an unfortunately common attitude towards like virtually anything which is a problem in human society lol - "The thing people are complaining about isn't a problem, the complaining is!" without the slightest intellectual effort to consider what is being complained about. It's unhelpful at best.