The thing is, the "Helen was robbed" narrative is not borne out at all by the weekly scoring, or even much by the finals scores.
Of the 11 dances that both Helen and Hamza danced, Helen only scored higher than Hamza in 3 of them. (One of those was the Jive, which she also did - and scored highly in - in Strictly Christmas a few years ago).
Hamza also did Rumba (25) and Tango (33) - total 58; Helen also did Paso (29) and Viennese waltz (31) - total 60
Going into the final, therefore, Hamza was the strongest of the two based on scores from the judges.
In the final, they both scored a perfect 40 in their favourite dances (their CCs). They both scored a 39 in their judges' choice. The difference came in the Show dance. These were quite comparable as both were based on traditional ballroom and Latin. Hamza had a mistake, but the judges praised him on his spectacular lifts and transitions in and out of them, and for recovering his composure. Helen was without mistakes, but marked down on her lifts, that were called messy. She got 37 for a dance without mistakes, he got 34 for a dance with a big mistake. That's hardly a massive difference. Craig (the most consistent and conservative judge) gave them both an 8. You need to wonder what Hamza would have scored without the mistake. I thought they were both lovely if a bit tame and too short.
Helen's CC seemed to be the perceived clincher. A dystopian/dominatrix number, mostly consisting of poses, and perceived to be centred on Helen's vengeance against her ex. Shirley said, "It sends a message and I love the message it sends." Not sure what that message was! Not a particularly joyful one. Against that, Hamza's CC based on African street dance, high energy, requiring a high degree of coordinated side by side dancing, and again spectacular lifts. Motsi said it was a dance that brought everyone together, brought joy and moved her to tears. Anton was also moved. Helen, of course, got the final dance of the night and thus the sweet spot/punctuation mark on the evening.
Some viewers will have already had a champion going into the final and nothing would have changed that. Others would base their decision solely on the final performances. Others a bit of both. Nothing that happened before or in the final made Hamza's win outrageous or deserving of the vilification he is now receiving.
And if Hamza doing some amateur hour country dancing at a uni review needs to be counted, then Helen's tap dancing to teacher level, plus previous Strictly experience being trained by a pro dancer and dancing on TV, needs to be weighed up against it.