Interestingly a Lemmy user in another thread has a very negative view of Brother because he only uses Brother cutting machines (for craft projects) and it's filled with DRM and HP style lock in.
There need to be open source "smart" devices. Like, I've read and edited the source code running on my 3D printer. I was able to do that in my own home because it's got an Arduino Mega for a motherboard.
I have a couple ESP32s, and the main thing that concerns me is that they utterly rely on the ESP-IDF toolchain. It runs on Espressif's RTOS basically no matter what. They're capable if weird little microcontrollers but they just slightly sketch me out.