If "traditional nuclear family" is a euphemism for anti gay marriage, that's closer to the opposite of 85% in the US these days. Even so I've never heard that given as a sufficient reason to identify someone as alt right, although YMMV.

Elon’s behavior in no ways aligns with traditional family values. Dude has children with multiple women and I believe his step mother is also his step sister or something like that.

I've never heard of these things as being 'alt-right.' If, anything the ability to have a 'traditional' family with a single wage earner and a full-time homemaker mother is simply an overt mark of privilege (because who else can afford to raise a family on a single income in this century?), not a mark of being right-wing.

If you're saying that other, non-traditional family structures are something degenerate, yes, you're alt-right, but I think if you're doing that you already embrace that label.