Should I use Two or One Instance of WordPress for Main & Blog Site? [closed]


I have a main site https://www.example.com/ and a blog site under the subfolder https://www.example.com/blogs/ . Whether I should use two separate instances of WordPress for them or use one instance?

I have asked this question on https://wordpress.org/support/topic/use-two-or-one-instance-of-wordpress-for-main-blog-site/#new-topic-0 . But the question does not draw much attention. So I have to ask here.