It's not invasive in my area, and I want more hummingbirds in my yard.
My mum told me it was summer lilac, when we got it from some friend back when my mum was super into attracting butterflies to her garden lol. Cause of the soil there, the flowers were super average in intensity. Anyway we had a bush for one year I believe. It grew well (way too well) and it was close (10m) to a few pungent roses and it still kinda oped them with a pretty bad smell, made being in the garden less pleasant. Anyway I got told to take it out that autumn and I was pretty careful with deadheads, but the seedlings still pop up (year round) in a good 10m radius, all around the roses despite mulch etc., must be at least 4 springs passed now.
Definitely deadhead it before it even has the chance to make seeds, trust me it will find a way to spread even if you do, and then prune in the first months of Autumn (never got to see a matured bush grow over winter but it might need more pruning). We went and got a native alternative which was a Great Hebe or something, from the same friend, but neither my mum nor I liked the flowers so we just stuck to having a single forest of swanplants for the butterflies to chill in which has been equally hard to manage. I'm not really sure how it's not invasive in your area? But you have been warned!
I liked the video you posted btw, I couldn't find any proper seedlings before my lockdown began and I've ended up having to buy a bunch of seeds which really is not the best timing where I'm from. (early autumn) But I have a few veges I haven't eaten and likely won't that I might propagate. I've been pretty into propagating plants from restaurant planters lately, mostly just out of curiosity but you would be surprised how many grow into plants.
edit: tl;dr
Butterfly bush is reallly hard to control and propogating vegetables sounds fun.