I get that "Use a real computer" isn't helpful though, so I'd recommend getting an app like NewPipe since you can use the "share" button there to copy the video's URL with the current timestamp included to your clipboard or paste it directly into apps of your choosing.
Edit: Got the story wrong. Wadsworth was just a commenter with an opinion and someone who worked at youtube had a sense of humor.
https://old.reddit.com/r/pics/comments/kxfxy/and_so_ends_20_...
https://old.reddit.com/r/pics/comments/kxfxy/and_so_ends_20_...
Post on reddit by person who added this feature: https://old.reddit.com/r/wadsworth/comments/l461y/today_i_ma...
YouTube will have ?v=[SOME ID] so you can't reuse the question mark.