Ublock Origin için Youtube Shorts'ları engelleme filtresi buldum. Benim gibi rahatsız olan varsa kullanabilir bende güzel çalıştı.

! Block Youtube Shorts on front page
youtube.com##ytd-rich-section-renderer > .ytd-rich-section-renderer > .ytd-rich-section-renderer[is-shorts=""]
youtube.com##yt-formatted-string:has-text(/#shorts/):upward(ytd-rich-item-renderer.ytd-rich-grid-row)

! Block Youtube Shorts on the subscriptions page
youtube.com##ytd-thumbnail-overlay-time-status-renderer[overlay-style=SHORTS]:upward(ytd-grid-video-renderer.ytd-grid-renderer)

! Block Youtube Shorts on the search page
youtube.com##ytd-thumbnail-overlay-time-status-renderer[overlay-style=SHORTS]:upward(ytd-video-renderer.ytd-item-section-renderer)

! Remove Shorts on sidebar menu
youtube.com##a.yt-simple-endpoint.ytd-guide-entry-renderer[title=Shorts]:upward(ytd-guide-entry-renderer.ytd-guide-section-renderer)

https://ronangelo.com/how-to-hide-shorts-videos-on-youtube/