Now that BLAB lets users to create pages, it's critical to have a meta description for each page.
For SEO purpose, pages are indexed with their meta description and title tag. If this feature doesn't exist, all pages show to Google as duplicate content.
With the most recent Google update, it can penalize for searcheability/indexation. For people who use a sub-domain, it may also affect their website authority using the main domain 🙁