USB 3.0 Hub shield connection
It all depends on device construction, whether you have hot plug options, whether the device has exposed metal connections to electronic internals and possible ESD events, or whether your primary concern is about FCC EMI restrictions. Some details of trade-offs can be found here.

The controversial "recommendations" come from the uncertainty under which condition the particular device will be used. USB is generally a "modular" system, so when things from different manufacturers come into a system, they don't know apriori how their device will be used, and provide minimal coupling between shield and signal ground. If you are designing an integrated system, my opinion is not to connect the shield with signal ground in intermediate hubs, and only couple the shield to signal ground at the battery power joint. Typically the coupling network has unpopulated footprints, and the components are selected/adjusted based on field/certification tests results.