Yeah it's probably an ancient web site. This was commonplace back in the day when Internet Explorer had 90%+ market share. Lazy web devs couldn't be bothered to

Yeah it's probably an ancient web site. This was commonplace back in the day when Internet Explorer had 90%+ market share. Lazy web devs couldn't be bothered to support other browsers (or didn't know how) so just added a message demanding you use IE as opposed to fixing the problems with the site.