You know what I am going to say... Google Play is owned by Google and is a private platform. They can remove, ban, suspend any app or app update they want when it breaks their policies. That is tough.
Being banned by big tech (whether apps, social media accounts, major payment processors for receiving donations) is in some cases almost equivalent to being shut down ; "it's a private company" : if the company has a monopoly and there's not a significant number of healthy alternatives for people to use (be it out of convenience and lack of skill, doesn't matter), then how about we take that into account?
It's sad and frustrating we wanted an open internet and companies took over a huge share of it and are not stopping amassing influence and control. I wish this wasn't so, but it is, and we have to open our eyes to it when we're debating such topics.
"You can still distribute your app when not being on the Play Store or Apple Store right?" "In theory yes" "Case closed" ; things aren't so simple! In a perfectly 'libertarian' world, I would be more inclined to be on your side. But we don't live in such a world. We live in a world of politics, extreme lobbying, complicated tax codes, one million parties with various interests locked into a power struggle for political / social control and influence.