User: "No role for this site"

I have guest authors that I add as WP Users. I add them as users because I like to have their name listed on the author byline (which also sorts all of their articles and works with my author box). Their articles are submitted by a submission form on the front end (so they aren’t accessing the back end). Can I set their user role to “no role for this site”? Since I’m the one posting the articles.

I did a quick experiment and it seemed like guest author articles that I post and approve (from the submission form) work fine even when the user is set to “no role.” But I wanted to make sure doing this isn’t going to be an issue. I thought that using this setting might be a good idea since there’s no need for them to access the back end.

Thanks!