I'm not sure I understand the question. Do you mean, why aren't https links clickable on Atomicbobs? If so, you can blame AtomicBobs for that.
If you look at the source code for a web page that has embedded links, you'll see that the code includes anchor tags around the link. The syntax is:
{a href="www.atomicbobs.com"}link text{/a}
(but with angle brackets instead of curly brackets).
If you view a page that contains the above anchor, you'll only see link text displayed, but clicking on it will take you to the www.atomicbobs.com website.
It DOES work - as you can see here - where I've linked to a site while using the https protocol. I could make it look like this https://www.w3schools.com/html/html_links.asp if that would better make the point. Despite what gets shown, both take you to the same place. Try them and you'll see.
This, by the way, is often used to play a simple trick on people. They see something they trust but the link redirects them to a place where vile people hang out:
www.drudgereport.com
Here's the point: Atomicbobs.com filters text when it gets saved and automatically turns anything that starts with http://www. into an anchor. It doesn't do that with text that contains https://www. It could have, but that would have taken additional work by the developer. Atomicbobs was coded quite a while ago, and I'm not sure attention was being paid to https protocols back then.
Is that the explanation you needed?