According to me, Removing old blog posts can have both positive and negative effects on your search engine rankings. It's important to consider the following aspects before deciding to remove any content:
1- Relevance and Quality: If your old blog posts are outdated, irrelevant to your current audience, or of low quality, removing them may have a positive impact on your rankings. Outdated or low-quality content can potentially harm your website's overall credibility and user experience.
2- Traffic and Engagement: Evaluate the traffic and engagement metrics for your old blog posts. If they consistently attract visitors, generate backlinks, and contribute to your overall website performance, removing them could result in a decrease in organic traffic and potential loss of valuable backlinks.
3- Redirects and Consolidation: Instead of outright removal, consider redirecting old blog posts to more relevant and updated content on your website. This ensures that users and search engines are directed to relevant information while preserving any SEO value gained from the old posts.
If you choose to remove content, ensure you have a clear plan in place to minimize any negative impact by implementing appropriate redirects or consolidating the content into more relevant pages on your website.