tl;dr Don't hate on people who got tricked into buying a Bambu printer. Direct your hatred to Bambu itself.
We all know about the anti-consumer Bambu Printer changes by now. But I think it's important to remember not to make fun of people who already bought one. In fact, most agree with you that these changes are unacceptable. So those people already got kicked in the gut.
As someone who bought from Prusa instead of Bambu, I completely understand the feeling of "Ha, I told you so!" But spreading that on every post is actually counter-productive. Remember that most people who bought a Bambu printer did so because it topped every "best 3D printers" list, had tons of sponsored content, and were affordable easy-to-use printers. Not everybody heard about the potential for such anti-consumer changes to be made. And many who did know were often misled into thinking it wouldn't happen.
Instead of being critical of individuals, be critical of Bambu themselves. Bambu are the ones who screwed over tons of people who love this hobby. If we want to see 3D printing be an open-source style hobby, then we need to help people see the value in that. So if anything, this is the chance for you to make more people aware of good, open systems. If you make fun of people and point fingers at them, you are just making them defensive. Don't make them direct any hatred at you that could be directed at the company itself.
Hope this isn't too preachy. I just wanted to get this out there.