Many devices do not need a powered hub, including the Elektron ones, so it makes perfect sense that they shouldn’t include the PSU imho, especially as it would have bumped the price up
Let’s be honest, sourcing a correct PSU isn’t rocket science, it may be tricky to find the right one, but it’s easy to avoid the wrong ones, so no damage need ensue
All you need to source is an MTT hub, perhaps some chip sets in said hubs are fickle with certain PCs but there are plenty of threads on this topic, I sourced a perfectly fine cheap Hub before OverHub came out just by reading those threads
Elektron removed the need for anyone to need to do this and they’ve also provided the specs required to source your own psu - not a lot to be getting frustrated about in that picture imho … although, perhaps a 7-port hub is statistically likely to end up hosting a few devices in need of power
as has been mentioned the hub could theoretically be used to drive a lot of mA hungry devices or maybe it need only power one or none - should they provide a hefty 3A PSU just to cater for the one extreme or allow end users to find their own solutions for their own configs !