They build arguably the best 3d printers out there. If you run a business that relies on 3d printing, they are the main game in town if you want reliability and consistency.
My X1C is completely cut off from the internet, it just talks over LAN to my computer and I send it jobs, I never setup any sort of account with Bambu - never really needed anything more than that.
I don’t myself have the same sort of xenophobia towards Chinese products that many other people have, but I do like to buy local when I can. There just aren’t really any American companies (or companies anywhere honestly) producing products at the level that they are for 3d printing. If something comes along, I’d be happy to try it out.
Yes they're incredibly good machines. Yes you'll have to probably buy another one in 3 years for some arbitrary software reason