For example, it wasn't too long ago (the Obama years) that the left was saying we all should switch to "clean burning" natural gas. Now they're trying to ban nat. gas, even after they forced many power utilities to switch from coal fired power plants to natural gas fueled power plants.
Likewise with the left's love/hate relationship with nuclear. The left will do the same with hydrogen if it ever gets traction.
“…the left will figure out why it’s “bad” for the environment.”
This is very easy to see coming. It is extremely hard to avoid hydrogen leaks because It is the smallest of all molecules and leaks through seals like crazy. As seals wear, it gets worse. They will discover that letting billions of tons of hydrogen leak into the atmosphere is very bad for the environment and we must transition off hydrogen.