SRM and glacial are bullshit, they first won't ever be able to attain enough finanicing to make them convincing to whoever wants to be convinced that "Something Is Done", is from engineering perspective pointless, and all in all resources are better be spent on like, stopping people being killed than on some shit that everyone pretends to care about so that they don't need to care about real issues. Like energy grid instability, Saudis being all butthurt, Iran going batshit crazy, Israel going to hell, Syria already there. And not to mention Ukraine.
If you want to save a world, start small.