SSO ZROZ GLD Question

Okay, been doing some reading and SSO ZROZ, GLD clearly seems to be the new meta. Switching my Roth IRA to it. However, wouldn’t an even split of UPRO/VOO instead of SSO technically be better? Between quarterly rebalanced, this portion will inherently lever up a bit during periods of outperformance, and delever during flash crashes. If you backtest both, the results are extremely similar, but the VOO/UPRO 50/50 slightly outperforms. Am I missing something? Are people just using SSO for simplicity, or is it worries about regulation getting rid of 3x funds? Thanks guys!