“Email list size obsession is one symptom of top-of-funnel fixation, which relies on churning through a bunch of people to extrude as many customers as possible. That kind of list-grinding means that a lead who’s not on the path to becoming a customer is a distraction.”
The quality of your audience is far more useful to your business in the long run than obsessing over the quantity of subscribers. Just like the content you create, the more focused your audience, the better your results will be with fewer emails. Don’t get too hung up on size when size could actually hinder your success.