Two things are usually in short supply when you run a Mastodon instance: Funding and public attention. But both are important so that the instance can continue to operate and - if desired - achieve growth or reach.
My goal with metalhead.club is to offer a professionally hosted platform for everyone who feels at home in the metal music genre. In order for such a theme-based instance to be viable and its users to benefit from it to the greatest extent, it must achieve a certain level of popularity.