Jerboa

Not in Jerboa and not directly in Lemmy. But every user has an rss feed that you could subscribe to. For example, your feed is https://vlemmy.net/feeds/u/wr90.xml?sort=New

You can in mastodon.

Just search the user name@server. You can see just the posts, or posts and replies (aka comments).

Unfortunately that's only a kbin thing.

There are two very distinct categories of content aggregation/social media: The ones where you primarily "follow" people/content creators (facebook, twitter, instagram, youtube, whatsapp) and the ones where you primarily "follow" subjects (reddit, lemmy, slashdot, etc).

The ones that focus on people are much more prone to create opinion bubbles, polarizing groups, and the obnoxious "influencers".

Of course in some cases algorithms (as in youtube) may take in account the subject of your subscribed content creators, and feed you other creators covering similar subjects, but when the focus is on people, chances are they'll feed you similar opinions, not only similar subjects.

It's easy to see the difference if you compare subscribing to a "r/news" channel in reddit/lemmy with subscribing to a "foxnews" channel in youtube/facebook. One of those will get you a wider range of point of views (despite possible mod biases).

So I really hope subscribing or following people never becomes relevant in lemmy, let alone having algorithms tailoring what is shown to me. I want to know other people's opinions; not an echo of my opinions.