If I understand these SafetyNet changes right, it's now relying on TrustZone, where "trust" frankly means distrusting the end user. This runs on a privilege level above the OS kernel, and it isn't possible to modify that firmware or extract data from it even with the unlocked bootloader, by design. It's currently used for media DRM among other things.

Jeez, WTF. Looks like I have to buy a new tablet (my old one is on its last legs) before this shit hits the markets, no way I'm gonna have a device that is either not rootable at all or keeps me from using mobile banking.

I'm all for more security measures, but not at the cost of giving up my freedom entirely.

The vast majority of devices sold today already support the hardware, so you're too late if you feel you're not willing to tolerate this.