@omgubuntu Ok Joey, since you are one of my favourites I will answer any questions you have on this. Just ask!
I will clarify something though. Yes, I put up the flatpak and yes I am a Vivaldi employee but for the time being it is not an official Vivaldi flatpak (hence the lack of tick). I can make it official but I have chosen not to while I test the waters.
It is up because of overhelming demand from users (unlike snap) and I wanted to get something out since all the others browsers are there (albeit most of them not official either) and Vivaldi was notably missing but I do have some concerns about Chromium browsers running under flatpak. I will accept that my fears might be completely unwarranted. I should get someone more technically competent to check before we make this 100% official.