1. No "favorable conditions" to slavery means Stowe never recognised advantages to slavery. Not only he does not, but he laments it despite those "favorable conditions".
2. Hale didn't excuse the courts; he actively supported their work. That is, until he decided he didn't want to. Later commentators on the trials mark this as the defining moment that helped turn public opinion against the prosecutions.
To sum up my point, read your history.
> Let me spell it out
> read your history
Seems pretty aggressive to me. If you are refuting these points, why not include all relevant information?
But in any case, the second point (that Hales work didn't end the witch trials) you only just make here, and the first you clarify.