That means it'll work on anything. The old desktop PCs that sit around in public offices for decades will display it with no problems. Compare that to a beautiful, modern website from a rival that plain won't load let alone render on that ancient computer.
The one with the working website wins the contract.
Of course, you probably won't notice this unless you're using a dark mode extension like me, because under normal circumstances, those links are invisible, since they render white-on-white.
Also, tables play poorly with mobile and are usually the opposite of responsive.