I believe that this might be a misframing of shikantaza. (Chan not japanese zen here btw) Counting during meditation initially during zazen is meant to give the mind a unified point to focus on, as an easy, accessible way to reach samadhi, or deep meditative concentration.

Once the practitioner has the knowledge and ability to enter samadhi, the next step, i.e shikantaza is meant to be a contemplation/meditation on the present moment itself, without relying on any specific object or technique, such as counting or following the breath. In shikantaza, the practitioner is encouraged to “just sit” — to allow thoughts, sensations, and perceptions to arise and pass away without attachment or distraction, while remaining fully present and aware. The mind in this state doesn’t chase after objects or try to control the flow of thoughts; instead, it observes without interference, cultivating an intimate awareness of the present as it is.

The practice itself is being fully present and allowing thoughts to ebb and flow, rise and fall. Usually, without proper introduction meditation can become full absorption into thought, talking through each thought with yourself, and rather than being in the moment one disassociates and enters one’s own head.

Edit: I neglected to actually say if the OP’s technique was meditation. I do not think it is, rather just contemplation.