Yesn't. From my understanding it does suppress external links from showing up in the "for you" tab or tags (Though to my knowledge it's now only if you spam links in your post). It's easily circumvented by posting the link as plain text
I think there's certain tags that Tumblr does suppress which I don't think we're going to avoid on any platform.
But it does not punish you for tagging your post well, only for misusing tags,
versus for example Twitter which I believe was found to suppress posts with hashtags in general unless said hashtag was currently trending.
Both of those things though are only for tag search and the "for you" page. The "following" page is the default on Tumblr which isn't operated by algorithm.
I love the tagging system on Tumblr because I can go to any blog and find everything under that tag, which makes it easy to browse old things, something most socmed make it very hard to do unless the artist aggressively repost their own stuff
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But it does not punish you for tagging your post well, only for misusing tags,
Both of those things though are only for tag search and the "for you" page. The "following" page is the default on Tumblr which isn't operated by algorithm.
Most socmed want you to focus only on new new new