Not that I have seen. You can edit the content, but you cant disable comments or additional content to an item once it is posted.

Changing ports isn’t a terrible thing, also not the perfect “fix” either, as you can still recognize open ports and scan the service on them.

Some ports are reserved in networking, so should stay away from those.

Some ISPs don’t allow you open ports on 80/443 as those are web hosting ports and they provide a service to consumers to download content from the internet, not for their consumer to be a web hosting provider as well. That’s at the residential level, if you have a business plan that might change, but it might be hard to convince and ISP otherwise.

I wish one account on the fediverse was more easily used across platforms: mastodon, peertube and kbin for example. I can follow kbin on mastodon but came enjoy the thread experience of kbin. Still getting used to each platform as well as they each offer a unique experience of their own.