I’m looking at Shmuel 2.
On 15:2 Alshich and Malbim say that Avshalom said that David tends to favour people from one of the cities in his own tribe of Yehudah. This claim seemed to resonate with people as we see in 19:42.
However 8:15 says he administered justice and charity for all his people.
Did David become biased in his old age or did people become less accepting of David as he got older?
The Malbim in the next Posuk says that this was part of Avshalom’s plan to usurp the kingdom from Dovid, but not that this was actually what Dovid was doing. Rather what it says in 8:15.