Website redesigns generally have more to do with what's going on behind the scenes than with what the reader sees. Staff changes, licenses expire, tools and technologies deprecate, security concerns emerge and evolve, and sometimes things must change - even be rebuilt from scratch - before they cease to function. And then there's the ever-increasing necessity for sites to be mobile friendly...
Maintaining the status quo sometimes comes with a substantial cost that can't be overlooked by those in a position to see it. Very few businesses spend the money to redesign a working system on a whim.
Which is not to criticize or dissuade anyone from being Grumpy Gun Guys, Grousing Greatly. That's part of the natural order of things.