Q2A is not a blog script to contain dozens of post at most
It is a community script that will contain hundereds of thousands posts at least
So its sitemap ought to be eligibal to refer to this amount of posts
As for the q2a default sitemap will be useless after a short period of using q2a when the question excess 10K then the next will be looking for a proper sitemap
The Q2A Ultimate SEO plugin provide good sitemap but the plugin itself has a lot of bugs issues
There is an other developed plugin does not working properly and does not peovide latest question to search engines it just provide categories as a sitemap
