It is first and foremost a left-wing agenda, it’s just that some on the right have triangulated towards it, or been suckered by it as apparently you have been.
This particular issue which falls under the category of coastal protection and restoration sometimes called coastal mitigation was set in motion by the GOP.
One of the last acts of the republican controlled congress in DEC 2006 was GOMESA in which Texas, LA, MS, and AL were given Royalty Sharing in which they are given half of the federal royalty for their coastal mitigation. Then congress saw to it that these same states plus florida would get the BP fine money for coastal mitigation.
Look carefully at VA, NC, and GA. The premise of their willingness to allow drilling off their coast is predicated on receiving royalty sharing.
Coastal mitigation is not a left vs right issue. It is a coastal state vs interior state issue and has been since Truman proclaimed the shelf as belonging to the feds..
If the coastal states receive this benefit, the interior state want their cut, which they get from the Land and Water Conservation Fund and PILT(payment in lieu of taxes). Part of the shared royalty goes into the Land and Water Conservation Fund to benefit the interior ststes. Also, recall that the Ryan Budget/GOP budget from last December extended the Land and Water Conservation fund for 5 more years, along with extending for 5 more years the renewable energy tax credits.