Based on my experience on some projects and a bit of research on Google I have compiled the following list of common SEO problems of SharePoint.
Little control over the length and structure of the URL.
Default redirections 302 (temporary) redirects instead of 301 (permanent).
By default SharePoint will create the URL based on the title page. This can be a problem from a SEO perspective because the content of a page could always change but the structure of URLs should always be persistent.
Automated creation and updating of XML Sitemaps not supported out of the box
You cannot add custom meta tags such as
<meta name="robots" content="noindex">to control search engines robots.
The platform really has all these problems SEO? Or these problems are due to old versions or the lack of knowledge of some people who use it?