Does it show in the URL bar that you've been redirected to that site or it just displays as a huge text on the center?
It shows no indication sign to be a redirect.
It just shows a website URL in URL bar.
But it was not official SegWit address organization website, it was a completely different website.
Then it's the former "
If yes", but the site seem to behave unexpectedly so it must be the assumption above that it may have been hijacked or just a new owner with malicious intent.
The default is it's displaying the parked landing page with ads but often redirect to different questionable sites.
BTW, the original website wasn't an official organization for SegWit Address but only in name.