One article receives +80% of the total Google traffic, is that healthy for SEO?

Hello, I've been working on a website since 10 months ago, I have been able to get nice traffic from Google but the problem is that +80% of that traffic goes to just one of my articles, the other 20% is split between the rest of the articles I have in my site. My site has a total of 28 articles and I had 52k sessions the last 30 days.

My site recently got rejected on Mediavine, I wonder if this could have coused my rejection.

I mean basically all the traffic goes to one page and it is a lot of traffic...

I wonder if this is totally normal, I do not have too much experience with SEO, so Im asking to some of you with experience if this is okay, and if it is common to happen or completely out of average for a 10 months old website

This is something that can happen. Don't worry about it, be happy that you ranked and you get organic traffic.

Something in those lines (a few pages generate the most traffic) is valid for most website.

Actually, this is valid for most things in life. I don't know if you heard of the Pareto principle (80-20 rule) but what happens to your organic traffic fits in this rule.

Here's for more info: https://www.smartinsights.com/marketing-planning/marketing-models/paretos-8020-rule-marketing/