I cannot speak for this charity, but it is highly unlikely that individual donations like yours fund those salaries. Often those positions exist to lobby governments and secure large charitable donations. People like that are hire primarily for their contacts. You could hire a qualified “CEO” to run your org for ~$250k, but they likely won’t have Larry Ellison on speed dial or be the god parent of the kid of a senator, etc, etc.

You want to have friends in high places and friends with loads of money if you are fighting for wildlife preservation because otherwise nobody will even acknowledge your existence.