uBlock Origin Filters to get rid of Copilot + AI feed bloat on Github
uBlock Origin => Open the Dashboard => My Filters => Add:

github.com##.copilotPreview__container
github.com##.AppHeader-CopilotChat
github.com##li.ActionListItem:has-text(Copilot)
github.com##li.ActionList-sectionDivider:has-text(Copilot)
github.com##li.TimelineItem:has-text(Copilot)
github.com##div.pb-4:has-text(Copilot)
github.com###copilot_free_global
github.com###copilot-button-container
github.com###blob-view-header-copilot-icon
github.com##a[href*="/resources/articles/ai"]
github.com##a[href*="/settings/copilot"]
github.com##a[href*="/features/copilot"]
github.blog##a[href*="/features/copilot"]
github.blog##a[href*="/ai-and-ml"]
github.blog##article.changelog-label-copilot
github.blog##article.changelog-label-models

github.com##article.js-feed-item-component:has-text(LLM)
github.com##article.js-feed-item-component:has-text(OpenAI)
github.com##article.js-feed-item-component:has-text(ChatGPT)
github.com##article.js-feed-item-component:has-text(GPT)
github.com##article.js-feed-item-component:has-text(Llama)
github.com##article.js-feed-item-component:has-text(Gemini)
github.com##article.js-feed-item-component:has-text(Grok)
github.com##article.js-feed-item-component:has-text(DeepSeek)

Also disable + block everything under: https://github.com/settings/copilot