system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU][Watchmen] What would Dr. Manhattan think of Thanos?

 How do you think Manhattan would feel about Thanos wiping out 50% of Life in the universe? Manhattan says at the end of the movie [Watchmen], that he'll maybe create some Life. So what do you think his opinion would be on the matter?
gpt
I don't know much about him in the new DC continuities, but *Watchmen* era Manhattan was ready and willing to stop Veidt from murdering far fewer people, despite Veidt's arguably noble intentions. Manhattan would also be smart enough to realize that Thanos' plan, unlike Vedit's, was completely idiotic.

Manhattan would most likely snap Thanos out of existence as soon as he learned about him.