And you’d think people with a Pinterest account would opt to search on their website/app rather than going through Google (thus making it even more unlikely that the Google user has a Pinterest account).
And, no, most people don't bother picking a site before searching. Why would they artificially limit their results? People don't even visit amazon before searching for Amazon products.
I’m not saying that 100% of all users with a Pinterest account use their website/app, but many of them will of course opt to use Pinterest’s website/app for their image searches, which means an even smaller percentage of the Google Image Search users will have a Pinterest account.
But their hiring process is broken. They randomly hire a % of people who pass an algorithm test. It's so random that 70% of their workforce wouldn't be hired again if they had to go through that process.
The brand is so strong that people think anyone who makes it into google must be the best of the best. It's more like a random person who has studied leetcode.