That "arguing with a bot" bit really hits home, I've been there too.

Saw a YouTube video that said exactly this about the 328i.

I mean I get that it works but is it really that big a deal for cleaning up soot? Ive been using a regular shop vac with just a standard filter and some water in the bottom for years on fireplace ash and soot and never had a problem. Maybe its just me but $80 seems like a lot for something that just catches a little extra dust. Unless you are doing this every single week I dont see the point.