I technically answered this in another post: https://feddit.rocks/comment/39513

I hope it is a good reason to prefer it, but it's your choice at the end of the day :)

For me it's sponsorblock and integration with the LibreTube android app

• it proxies your searches
• it has sponsorblock, Return Youtube Dislikes and DeArrow
• it lets you make playlists and subscribe to channels
• it gives rss feeds (dont remeber if invidious does that)
• it is (server side) lighter