Earlier quoted context omitted.
As someone who loves the Big Three (Asimov, Clarke, Heinlein) and have read a lot of SF, I pretty much despise Bradbury. There’s no science in his science fiction.
Not much in many of Heinlein's either. Or in Star Wars.
Even in a lot of hard SF, a lot of the science is wonky if it falls outside of the author's special interest or area of expertise. Relevant to Asimov, the only reason robots have "positronic" brains in his stories is that positrons were a new discovery at the time and it sounded cool and futuristic to him.