If Google can’t work this out, it won’t be able to find all the pages on your
If Google can’t access all the pages on your website, it can’t read all of the content you have.
If Google can’t read your entire website’s content, it will only be able to run you based on a fraction of the keywords it could possibly find.
If Google doesn’t find all the keywords it could, guess what… poor ranking!
Adding sitemaps and pages full of links can help this issue, but ensuring search natural links using Search Engine accessible code is always safest.
As a final thought, it’s also not just about Search Engine accessibility, but human accessibility. People using screen readers and relying on the use of a keyboard without a mouse will also likely encounter problems.