the pressure is intrinsic from the knowledge that what you publish will now be displayed to a bunch of people, unfiltered by algorithms. do you really want to put out a post that you yourself might find useful, but might be considered shallow, low effort, repetitive, non unique by your readers, and a waste of their time?
the fact that people want to read every new thing being posted is external validation, rather than letting each piece stand alone by its merit.
My general experience with RSS users is that they understand not every post is for them. I've got some feeds that I read once or twice a year when I'm in the mood to learn what's going on in that corner of the world. I've got feeds where I skip 90% of the posts, because they're not the topic(s) I subscribed for. And I've got feeds I read daily, of course.
I tend to expect most useful sources of high-quality information to have a fair amount of off-topic content, since it's hard to reach critical mass on a single narrow niche. I read Hacker News, but click maybe 10% of the links
RSS is very liberating. Quality of content is something very subjective and the audience can choose what to engage with. Nothing called perfect and not every post has to be a masterpiece.
I’ve had a Wordpress blog since 2012, and many years of a Livejournal before that (when timeline filters were pretty much nonexistent) and I don’t think I ever felt this fear. Sometimes I had art to share. Sometimes a serious post about something that was on my mind. Sometimes just the results of a “which Teenage Mutant Ninja Turtle are you” quiz that half my friends had already posted.
Worrying about this “pressure” is a great way to be that guy with three posts about their new static site generator and nothing else.
For a similar reason, blog posts should have no words as these can become SOE and the purpose of blogging become intrinsic SEO.
Personally, I blog in my head but am concerned still it could lead to bias in my other activities which are mainly related to sitting under a tree by a lake in the middle of nowhere.