Blogging is more than just text (whichever markup is used) or links to youtube etc. How does "someone wanting to blog" add a picture of their cat to their post

Blogging is more than just text (whichever markup is used) or links to youtube etc. How does "someone wanting to blog" add a picture of their cat to their post? I'm aware that Grav has tackled this but not others. Comments can be a swamp but with WordPress there is Akismet. Which SSG's provide that? I suppose it comes down to what you mean by 'blogging'?