How does being email-based instead of phone-number-based meaningfully help security? I would understand something like non-federated Matrix, where only approved users have accounts on your instance. Less phishing at the cost of convenience.

A white collar example where AI is effective: Make the button this specific shade of blue and move it 3 pixels to the left

On the other hand, complex white- and blue-collar work do not seem very close

I think AI might end up being more successful in the low-complexity trades (e.g., install a disposal) than for high-complexity white-collar work. The robots just take time to develop.