It’s really Dracula vs Modernity. There’s nothing in the blog post that justifies the usage of the “Catholic” epithet. London is the seat of Anglican faith after all and using type writers and records are secular endeavors.
I didn't read all of it, but the first two pages of [1] demonstrate how the book is "Catholic" as opposed to Anglican, with the protagonist feeling awkward, as an Anglican, at the icons and crucifixes used as (in the book effective) protection.
Keep in mind, for the purposes of the book Catholicism and Orthodoxy can be considered the same as we both believe in icons, consecrated sacraments, apostolic succession, transubstination, etc
FWIW, I like the concept in the book 'I Am Legend' where the vampires are repelled by religious symbols that are meaningful to them, rather than any religion in particular.
Sure, but they sure ain't modern.
It's also a sneaky, underhanded way to make a point. The shell game of argument tactics.