I hear you and used to advocate for them. It’s been 4-5 years now and State Farm still smokes them on home/auto. Not even close. Even considering their yearly rebate deposit. Could be state/location specific?
Lots of factors, one being which of the four USAA insurers is actually writing your premium. Each insurer has a different pool of insureds and different actuary tables based in the pool. It is what it is and for some it’s great and others it’s not. As a 26 year member, it would be hard for me to find a better insured, but Amica comes close and they seem to be pretty choosy on their members. This disclaimer is at the bottom of most usaa.com pages for auto/home insurance:
Property and casualty insurance provided by United Services Automobile Association, USAA Casualty Insurance Company, USAA General Indemnity Company, Garrison Property and Casualty Insurance Company, based in San Antonio, Texas.
Changing gears, in the homeowners arena USAA writes exclusion policies, other (not all) insurers write named peril policies. USAA also does not participate in all homeowner markets and that impacts the pool of insureds as well.
Having said that, as a privately held company, USAA also cannot do things a publicly traded company can do to raise income (issue/sell of stock) that can be invested to meet reserve requirements to pay out losses, so a lot of factors when comparing.
If there’s one thing USAA isn’t clear about, it’s the fine print. They try to level things out as much as possible, but the reality can be a stark contrast to the aspirations.