block-all-visible-tweets.js

// get all the three-dot menus that are within tweets
document.querySelectorAll("article [aria-label=More]")
  // for each three-dot menu...
  .forEach(m => {
    // click to open the menu
    m.click();
    // then find and click on the block item in the menu
    document.querySelector("[role=menu] [data-testid=block]").click();
    // then find and click on the confirmation button in the modal
    document.querySelector("[role=button][data-testid=confirmationSheetConfirm]").click();
  })

You can paste this into the console in dev tools to block the authors of all the tweets that are currently visible. Like say on a search results page on twitter, for example this one https://twitter.com/search?q=%22pay%20the%20%248%22%20filter%3Ablue_verified