It's generally a good idea to separate work and personal devices. It reduces convenience and can take up more space, but definitely the way to go more often than not.
You're on work devices ~35% of your waking hours. There's still a need for dignity and privacy within that time. Working doesn't mean you become completely subject to your employer's whims those hours.
I'm not saying there isn't... It's a matter of trust, and I tend to be a bit paranoid in general. I don't trust work devices, even if working on highly sensitive or secure applications.
I limit what types of work apps I'll install on my personal phone, and try to limit personal usage of work devices.