When you create a silo structure, you’re making the crawler’s job a lot easier by going through your website and finding out if you’re an expert on your targetted keyword. You might not get penalised but if search engines crawl a website with a strong silo structure in place, you’ll definitely be placed higher in the search results.
Website architecture is a vital factor that search engines look at to decide where your site should be ranked. Make your category landing pages optimised and internally link to relevant content silos only.
SEO Silos provide the user with a great experience and algorithms, like the one Google uses, see user experience as a key indicator of where your site should be placed within the SERPs.