FWIW, in reference to the ritual murder:

Many, many ancient cults were built around blood rituals and human sacrifice. One of the most important things about the spread of Christianity was that it halted these practices

I took the "blood" references as meaning, "You no longer have to sacrifice your children, or any other humans, in an effort to please your god. Christ did that for you, once and for all. It's no longer necessary, so stop doing it."

Christianity would only be a blood cult if its followers continued to use blood rituals that used actual blood. But they don't. Again, Christ put a stop to that.

As far as "Why would we drink his blood?" the answer is: We aren't. That's the point. The bread and wine take the place of the human flesh and blood, because Christ instructed us to substitute them. The bread and wine are just as good ("this is my blood you drink, this is my body you eat") as long as we remember the sacrifice that Jesus made so that we do not sacrifice an actual person ever again.

Christ was the final human sacrifice and it's supposed to stay that way.

What's really shocking is that blood ritual and human sacrifice still goes on today. Most people don't believe that - they think we're too modern and educated for that kind of terrible primitive stuff - but sadly, they're wrong. It's still there and it happens among the highest levels, not the lowest. And since people don't believe this could possibly be happening in the modern world, they have the perfect cover.