What were the heretics opposed to? What was required?

The heretics argued that the church was corrupted, they rejected expensive church rites, condemned priests and monks, called the pope the viceroy of the devil, not God.
They demanded that the clergy give up tithes, their wealth and possessions. Their teachings were recognized as heretical, i.e. harmful and dangerous. The heretics did not think to keep their ideas secret. They spoke openly, looking for people’s understanding. And this was the most dangerous from the point of view of the church, as it could undermine the authority of the church, turn believers away from it. The number of heretics grew.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.