In fact, all that badass posing might be to a good part compensation of mummy boy's tragedy... esp. given that even unsouled pre-Spuffy Spike was deep enough into the gray (admittedly, dark gray, but gray nonetheless) area to have The Judge immediately wanting to burn him away because of being "too human". In the evil soulless monster business, Spike never could hold a candle to Angelus, and that's not for lack of trying given that he always competed with him as the eternal rival in a twisted Oedipal triangle.
I've always felt the writers on Btvs played up soulless Spike's "humanity" way too much. I mean he wasn't any different to the vamps James or Elizabeth in Ats. Nor for that matter Vamp Gunn in Ats: After the Fall or even Harmony in Ats s5. The Judge considers burning Spike, but he also considers burning Dru and burns the vampire Dalton because he loves to read. If anyone's the anomaly in the verse it's Angelus, the only one without any humanity in him.
Harmony and Gunn have bothered showed compassion to people like Spike did at times whilst chipped, Dru, Elizabeth and James also showed the capabilities to love as well.
I've just never seen Spike as that unique in that regard I gotta say.
What the writers boasted about in Btvs, on Ats they'd been doing it for years.