I agree. However, the primary purpose of the Sacrament of Penance is to rid us of our mortal sins, and also our venial sins. A person in a state of mortal sin may not receive the Eucharist; wheras a person in a state of venial sin may. The key here is in identifying one's sins. Frequent confession can lead to scrupulosity. While I would NEVER suggest that one in a state of venial sins should shun the Sacrament, it is more important that the penitent confess his mortal sins. If these exceed two, then that individual should make an appointment for a private confession, out of deference to those who come to confess their venial sins.
K, what is the frequency in the Orthodox Church?
"K, what is the frequency in the Orthodox Church?"
It depends on the jurisdiction and even the parish. Some "rules" say four times a year, others once a year. Some jurisdictions require confession before every communion. The frequency rate I would say runs from never (a lot of people, especially older cradle Orthodox types among the Greeks at least) to once a month or so. Converts and younger folks seem more faithful to the sacrament. You should know that Orthodoxy makes no distinction between mortal and venial sins as such.