Strong memory is a blessing from Allah and not everyone who has got a bad memory is considered an evil person.
Look at the example of Nu'aym Ibn Hamad who was the teacher of Imam Bukhari رحمهما الله, called the lion of the Sunnah and killed during the trial of the Quran being created, even then his narrations are considered extremely weak because of his weak memory.
Ahlul Sunnah Wal Jama'ah do not generalize when it comes to Hadeeth!
Also makes you think, just because you don't have a strong memory, doesn't mean you can't achieve something in the path of Allah/for the sake of deen, as having a weak memory could put someone off initially.













