> 1) The images are so blurry and ambiguous it's really hard to get right, it feels like a test designed to make you fail
On top of that, I think some of the training sets are wrong. Multiple times I've been asked to find traffic signs, but it would only let me pass when including street signs.
There's also the issue that it will lie to you if the alogrithm decides it simply doesn't like you. Which means you'll end up doing at least a couple of rounds before it decides to let you through.
Here's a hint: VPNs do almost nothing to safeguard you from modern fingerprinting techniques. If you're using any browser [1] but Firefox or Safari, Google probably knows exactly who you are and is just doing the boxes for shits & giggles.