Not sure it is 'awful', it doesn't solve the underlying problem. But could be temporary solution amongst a lot of bad options if/when things get bad enough for people to generally wake up and need to do something fast.
Lets say a few more decades go by, we make no progress on 'non-awful' options.
Then suddenly we get a summer where a few 10k's or millions die, and suddenly politicians/public are like 'wow, guess this is real after all, lets do something. Guess we can start spreading sulfur around pretty quickly'.
Wouldn't be surprised if this happens, and then we over-compensate and create an ice age.
the politicians are in denial or are choosing short-term gains over the future the rest of us have to live in. we even have agreements to do something, but then don't. we're operating on copium and delusion right now and many parts of the US are facing climate change related disasters already, but it doesn't move the needle. i don't have any answers, but i don't think any particular disaster is going to change people's minds.