I disagree.
I’ve read the relevant part of the Feser link, and he (like you) are mistaking indifference, which is privation of good, with evil, which is the opposite of good.
If the Samaritan who helped the wounded traveller is “good”, and the Levite and the priest who passed by on the other side of the trail because they lacked the compassion of the Samaritan are “evil” - then what adjective can be used to describe those who harmed the traveller?
There’s also the equivocation between ‘good’ as in helpful and compassionate vs ‘good’ as in working perfectly. A ‘good’ tool can be used for an ‘evil’ act. These are both different from your own definition of ‘good’ as meaning towards God. You appear to be mixing the three in your description of God.