Unless you have inside info, I’d be willing to bet Lauren does not have all the money. Nevada is a community property state, which means that any assets and debts acquired by either spouse during the marriage are generally considered to be owned equally (50/50) by both spouses, and they were married in 2013, back before she did anything with fitness or modeling. Also, if that business was a partnership which he had a direct hand in creating, which I guarantee you it is, then she is required to either hand over 50 percent of all future revenue from her OnlyFans gross revenue stream unless she buys him out. Given that her OnlyFans has not changed, I’d be willing to bet they agreed on the 50 percent payout.
A similar thing happened with an influencer named BodyRock.tv, AKA Zuzka Light, who created the entire brand with her body and face, yet her ex, who ran the backend, kept the channel, name, equipment, and every video as she didn't want to pay him in perpetuity but he also refused to accept a buyout. She chose to walk away with nothing and had to rebuild from zero. Lauren’s pricing and content staying exactly the same post-split is the clearest sign she’s already paying out (or about to owe) 50 percent.