Which is better than nothing.

It's better than almost anything else. I don't understand you people worried about driver bugs in a smartphone.

Facebook isn't going to deploy malware to my phone using Whatsapp, MS isn't going to do that using Outlook, Google isn't going to do that through Google Maps. Everything I used is either by a reputable developer, or open-source from F-Droid.

The only way I'm getting malware is if they manage to: 1) exploit a bug in my up-to-date web browser, 2) bug #1 is used to exploit a bug in the hardware driver. Oh, and of course, since I only visit reputable sites, I'm never exposed to malware. I'd have better odds of winning the lottery.

Which is where most security issues are found and/or mitigated.

Unless you have physical possession of the device, access to these blobs generally runs through the OS.