Yes, might be a bit faster, as you don't have to load all of jquery and the animations add-on. Also: one could save a bit of code by using CSS animations (i.e. for the pulsing circle).
However, as others already wrote: Although I'm all for VanillaJS (if JS is even needed in the first place), I dig the simplicity of how it's coded. Very minimal and extremely easy to adapt and set up. Most work is probably figuring out what the optimal flow through an app is to showcase the most important features to convert users. That's why we have marketing people - they do wonders explaining our ideas to others :)
I'm currently working on a project with seven of my students and saved it as a bookmark for later (we have to present our result to lots of people at the end)
However, as others already wrote: Although I'm all for VanillaJS (if JS is even needed in the first place), I dig the simplicity of how it's coded. Very minimal and extremely easy to adapt and set up. Most work is probably figuring out what the optimal flow through an app is to showcase the most important features to convert users. That's why we have marketing people - they do wonders explaining our ideas to others :)
I'm currently working on a project with seven of my students and saved it as a bookmark for later (we have to present our result to lots of people at the end)