People in this space are often very caught up in numbers. MRR, ARR, users, visitors etc.
But ask any founders who has stuck with it for more than just the early days. They will probably agree that it is from the feedback of the first few users, that the product is shaped.
If you are not spending time interacting with your first few users, you are leaving a lot of extremely important feedback on the table.
If people are willing to use your (probably not very polished) MVP, they will most likely also be very happy to influence how it will evolve.
If you're interested in reading more, here is the full article:
https://wecofounder.com/articles/the-first-five-why-your-earliest-users-matter-more-than-the-next-500