Some bots post a mixture of good and awful stuff.
With ublock origin you can filter out the nausea
eg
In the "my filters" tab enter:
! BLOCK WEB SITES
||www.vtforeignpolicy.com$document
diasp.eu##div.loaded.stream-element:has(div.markdown-content:contains(www.vtforeignpolicy.com))
then click the blue "apply changes" button.
Switch to your Diaspora tab.
Then clear buffers and reload by pressing Shift-Control-R
The first line is just a comment
The second line warns you if you try to go to the site
The third line contains the name of your diaspora pod at the beginning - change accordingly - and the text to look for in each post in the final parantheses.
That will make disappear any post containing that text.