Snow job. To take just a couple of aspects -
he's "Pro-Union" but only "disagrees with Mussolini after 1931". Mussolini banned (and violently - as in torturing, rounding-up and murdering - suppressed) trade unions as soon as he came to power in the 20s.
And "anti-big business" - so what? Fascists usually are anti-"supercapitalism", insofar as they have an economic theory it's corporatist, rather than capitalist.
His autobiography's not exactly "pro-immigration" (no, I don't have the quotes to hand).
And again, those swastika-waving Lazio Ultras are not "social right", they're unreconstructed neo-Nazis.
Di Canio's a fascist, writ large. If you don't think it's relevant, fine. But don't try and whitewash it.
Point taken.