You are very ill informed, eg. ignorant.

Do you know what a guidestar is? Do you know about adaptive optics?

Exoplanet hunting is very much done on the ground.

The black hole at the center of the Milky Way was discovered using telescopes in Hawaii. Won a Nobel Prize a few years ago.

And many many other recent discoveries.

SpaceX shills push this line and it is very much demonstrably false. Thousands of astronomers rely on ground based optical astronomy for their careers and they are extremely POed that a private company can ruin their work for profit.