Does it affect SEO if pages are only accessible via a link?

Question

Search Engine Optimization

The Wordpress blog has several hundred posts and pages.
But there are no links, buttons, etc. anywhere.
There is not even a button that would lead to records (posts).
That is, all pages can be seen only if you follow a direct link.
Does it affect SEO in any way?
In theory, the main thing for search engines is that the page is accessible and there is no ban on indexing.

Answer 1

Influences, influences. The weight on such pages will be very small.
Also, if you put links on them from the footer, the weight will be less than if the links are from the top menu.
Linking has a very strong effect on SEO, as well as its complete absence.

Answer 2

The question is not entirely specific. Is it bad for the domain to have such pages - no. Will they be in the index and can they reach the TOP - yes. But their weight will be less, as mentioned above. We have a number of product comparison pages that can only be accessed via a link, they are in the TOP 3 of Google for their top searches, but these searches are low.

Answer 3

And they would be in the sitemap, and he would be in robots.txt
And then - YES: it does not affect in any way.

Answer 4

Lack of internal linking will negatively affect