If an omnibenevolent God created a system in which existing without his involvement is an eternal torture, then I question his omnibenevolence. Especially if the best way to get that eternal torture is merely not believing something.
The omnibenevolence is a lie invented by believers (or, probably more specifically, proselytizers) in direct contravention to stated (and, assuming it exists in any sense even remotely similar in capability to what's attributed to it, observed) behavior, yes. This is true
especially for the various abrahamic/monotheistic gods, but more generally as well. Existent reality just does not cohere to a tri-omni god in particular, nor a benevolent one less specifically unless it's remarkably powerless or ignorant.
Staggeringly little about the state of reality or attributed behavior in various religious traditions makes a single goddamn lick of sense if the divine was actually omnibenevolent, and it stretches things real hard just to be benevolent at all. The only way theologians have been able to even a little square that circle is by pissing all over the meaning of the word benevolent(/good)... which can be fun to watch if you're in the right mindset, but in most cases is just varying levels of infuriating. Religious language is interesting right up until it tells you god was being benevolent, actually, when it had your child die screaming in a fire, bleh.
Things make more sense if you acknowledge the divine are exactly as spiteful, petty, and murderous as they're described. It's a miserable sort of sense if you think they actually exist, mind, because it means everything is a spate of suffering wound up and manipulated by a omnipotent egotistical hatebeast that could at any time just slaughter pretty much your entire species on a whim, and is probably taking time to figure out how to torture (sorry, "test") you for its amusement, but it's at least
coherent.
If there's a wise statement I've seen come out of religious belief, it's that if you meet God on the road, you should cut the miserable thing down.