Well, for example, consider what happens if you have your own Wordpress site.
In a Wordpress blog, when you create a new blog post, it automatically creates three or more internal links to previous posts of the blog, based on the category and tags of the current post. As soon as you hit "publish" you have three internal links.
Furthermore, on your own Wordpress site you have category and tag groupings that link only to other posts on your same site, and not to external sites or other blogs (Steemit tags are not internal to you personally).
When you upload a picture, Wordpress gives you a GUI interface with which to enter alt text, picture tags, etc.
Wordpress also allows you to create "Pages", which are general purpose posts not tied to any one date and are great for creating tables of content for your blog.
Wordpress also automatically logs your posts into an interactive calendar made up of---you guessed it---internal links to your own content.
Wordpress also allows you to populate your sidebars with any number of custom links.
Wordpress automatically generates copious amounts of metadata every time you post, sending up a million flags to passing spider bots.
Steemit, as far as I can tell, does not give us any of these options. So yes, Steemit is limiting what we can do, as far as SEO is concerned. Perhaps most limiting of all is the fact that in order to make a Steemit post, you actually have to put it on Steemit.com, where your content gets lost in the sea of other Steemit users. One step they could take is allowing users to set up their own Steemit blogs on their own personal websites, as well as adding in all the aforementioned features of Wordpress blogs.
Yet my steemit posts ranks higher than on high authority wordpress websites I manage.
If you don't know the difference between SEO and search rankings then you shouldn't be writing articles on the subject.
Wait, that's just mean.
We can disagree about this without being jabby.