No denial of that. Being specific about what one considers to be outdated is the first step toward modernising it. "I feel" doesn't hold the same weight as "I can demonstrate this to be the case" or "I can give this example of a problem".
With retail websites, my biggest frustration by far is poor stock keeping along with the default setting of showing both in stock and out of stock items.
Every new skirmish site I've played at had been clear with its safety rules on its website. There is a fairly new site that was desperately lacking in explicit rules or clarity on the website when it launched but they took the constructive criticism well and updated accordingly.