Theyre no longer trying to keep bots out. They're trying to keep humans out. This is exactly the type of thing a bot would be best at. They can probably tell you the estimated temperature to 3 decimal places of each picture.
Turing tests aren’t just about knowing things that a human would. Bots giving a perfect answer where humans would struggle is a perfectly acceptable way to filter.
While it wouldn't be cost effective to write a bot to bypass this, many websites that are employing this hcaptcha are intentionally choosing the harder to solve questions to push VIP subscriptions and similar stuff.