How/Why is Snake Island turning into a major battle? The island seems insignificant and lacks influence over the battle space!

NEW SATELLITE IMAGE - SNAKE ISLAND -
21/6/22 - 08:51

SIGNS OF DAMAGE/CHARRING IN 3 LOCATIONS ACROSS SNAKE ISLAND. (ZMIINYI ISLAND)

Image c/o - @planet pic.twitter.com/4MQsgH2Al1

— OSINT-88🏴󠁧󠁢󠁳󠁣󠁴󠁿 (@OSINT88) June 21, 2022

I don't get this!

The Ukrainians tried to hold this island and got smoked.  The Russians moved in and are getting smoked.

Why?

The Russians can control the land from the sea without deploying troops to it.

The Ukrainians are able to assault any installation/troops from shore.

WHY ARE THE RUSSIANS SO DETERMINED TO HOLD IT?  I don't understand.  Educate me please!

The crazy thing?

If either side decided to use the appropriate missile that's available today, then neither Navy could operate in those waters.

The seat of power is on land, not the water....