XTwitter and Mastodon both allow you to hide/mute reposts that are reposted by a particular user. Bluesky does not, you can only hide all reposts from your feed.
There is an existing issue for hiding all reposts. This issue is a request to be able to more granularly hide reposts on a per user basis. To wit: I would like to be able to select a user and then configure whether I want to see their reposts and/or replies.
(I follow someone on Bluesky whose posts I want to see but whose frequent reposting clutters my feed with things I don't care to see. Another accounts posts announcements that I need to see but their frequent replies to others are more clutter.)