Not surprised, many of these vendors are doing crazy things, insane defaults, broken security, hardcoded values. Security is not a priority, I get that, but at the very least some baseline check would be nice (no hardcoded credentials for starting)
There's also some irony in people happily ignoring that so many of these products live-stream the inside view of their homes and offices to some foreign corporate cloud - and in the case of suspiciously many Chinese security cameras, a state-backed corporation's cloud. Because, wow, it really is convenient.
Which is exactly why alll my cameras live in their own VLAN with no internet access, regardless of how trustworthy the company may be. Better safe than sorry and all that.