It’s not about quantity but quality. Lots of profiles haven’t been “updated” in years because most of their bios are already there. It takes real dedication and, more importantly, firsthand access to reading material to flesh out key points of interest from hundreds of stories. It’s hard enough just trying to copy edit or fact check at times. I’ve fallen down research rabbit holes in the middle of what I thought would be a simple removal of OOU material.
Anyone can edit, but not everyone can edit well, and those who can often don’t have the time or drive to do so. I enjoyed it for a long time but it eventually became like work and was starting to suck the joy out of comics for me. The Database was a great way to help me get into comics and is still a great tool for my continued reading, but I also don’t feel obliged to write fifty synopses for my favourite runs when people would ultimately derive more joy from reading them firsthand.