The price is just too steep for me at least
If I'd need that much high power USBpd ports I think I'd diy it from some old laptop PSU. I think I have one 250W one lying around.
But yeah. Many aren't ready for diy side of things and this Ugreen brick is quite small and certainly more water proff/resistant than almost any similar diy version. Those who travel a lot and need their (work) devices charged up conveniently... The price might be worth it.