Maybe. Though one should then also account for the likely case that early adopters were more niche and deeper into the content, being part of an early community. When communities grow it attracts all sorts of people which may decrease the quality of content but because there is more a few gems will still occur. Because they would be hidden behind the "crappy" content they need to be given more points to arise the mass. A prime example is Stack Overflow which almost died due to its own fame (for the early adopters).