Agreed that quality is subjective but there are objective metrics to gauge if a platform is growing in a healthy way such that both content creators and consumers have found a sustainable value exchange equation that can be scaled up (Some metrics include: Daily / Weekly engagement, time spent on platform, retention by cohort, you know, all your typical VC stuff... :)) It's okay if the numbers are small if the intensity is high and long-lasting
RE: Quality of content on Steem?