Also, I do want to point out that there is a distinct difference between the nature of Belmonts being descended from Alucard, and Belmonts being descended from Gabriel, whatever your opinions on either.
In the LoS canon, Gabriel became a vampire AFTER he had Trevor, and Trevor became a vampire AFTER having Simon, so the descendants of Simon, the Belmont clan, are human. There is no "taint", so to speak, in their blood. However, there's nothing inherently special about Belmonts aside from skill, natural prowess, and "fate" which is a bit disappointing.
In the Legends canon, Trevor is the product of a Dhampir, making the root of all the Belmonts' power vampiric in nature, and I think it's totally understandable why some people wouldn't like that. I'm not a huge fan of it myself. Belmonts have always been the holy warriors with the "special powers" that stand opposed to Dracula. They summon giant crucifixes, rain holy water from the sky, and fight with bibles.