This ride is a massive investment that is meant to last 15-20 years (at least) and anchor an major area equal to 15% of a new immersive theme park, which is home to a lot of firsts, and this ride on its own likely costs many times as much to develop as a single year of HHN. It's also a property that is basically unknown to most of the general public compared to the rest of the properties in this park. (Sorry, horror fans, but there's no way more people love Frankenstein and Dracula than Mario or Harry Potter.)
While this area and marquee ride are clearly a labor of love for the horror fans by the creative team, they are not the only demographic Universal that will be attending this park. Unlike HHN, which self-selects the audience due to its hard ticket nature, this ride is in a year round theme park with lots of other family-friendly properties, and it has to be accessible for the random family that walks in so that they aren't annoyed about missing 15% of the theme park they paid full price for. It's how all theme parks work, short of height requirements (which serve as a filter for younger kids anyway). There's no way Universal is going to make this ride inaccessible to all ages with excessive scary imagery, explicit violence, or gore. This ride will be focus tested to the hilt, and I will be shocked if Universal gambles this much money on a attraction that so much is riding on. I simply cannot see it as being significantly more intense than Harry Potter and the Forbidden Journey. At most, it will bear the same warning as HHN about mature subject matter and it not being recommended for children.
(Hey, I'd love to be wrong, but that's just the corporate calculus.)