Video title: Is free Affinity going to kill Inkscape?
Not bloody likely. I'll grant I haven't used the vector graphics part of Affinity v3 yet but, last I had checked, their software was more than a decade behind Inkscape's present day functionality.
Inkscape is far and away the best open source creativity based app I use. Also, it works on Linux, Windows, and Mac which puts it one major OS ahead of Affinity.