Your YouTube link contains ?si= which is at least not necessary, I think this is a tracking token too?
You can remove everything except the ID after yt. be/ID and the URL will stay intact
Discussion
I know it isn't necessary but I don't believe it is a tracking token because all YouTube tracking tokens start with that. On my phone I can double tap the tracking token and it will delete everything before the ?si=. I used to delete the whole thing before but there was one time that I accidentally deleted one additional character and ended up posting a broken link haha so I figured just leaving the ?si= there is harmless. There is no tracking information.
Obviously there is no official information what exactly the tokens represent but some people say ?si is a tracking token to, I also think as its a id not necessary to locate the video it has to have some other, undisclosed purpose. Better to get rid of it imo.
I worked in digital marketing a long time ago and I remember how Google analytics would add unique trackers to links in emails and social media pages. The ? and & are usually what is used. When the link is accessed, Google analytics stores the text that comes after the ? or &. The si stands for share info. But since there’s no text after, no info is shared. It’s like me giving you a blank piece of paper and telling you to save the information on it.
Better yet you can copy the string after /watch?= and pass it to yewtu.be/watch?= or some other invidious intance to minimise tracking with an alternative youtube frontend
I considered this but these instances are sometimes a bit unreliable and go down from time to time. Also mobile UX is more pleasant with native URLs (so you can open NewPipe or the YouTube app with them)