That was kinda my concern, I made one but I never used it because the youtube one was so easy. I want to use my own but didnt want the extra work of editing it into my vids and doing the annotations. I could however set it up so it maches the youtube end screen positions....I think the advantage to the YouTube end screen is that the links are clickable on multiple platforms. If you make your own and use annotations, viewers on mobile won't be able to click on them.
That was kinda my concern, I made one but I never used it because the youtube one was so easy. I want to use my own but didnt want the extra work of editing it into my vids and doing the annotations. I could however set it up so it maches the youtube end screen positions....