If they don't want to make it available even for small tests for free, that's fine, but then don't put a button suggesting I can try it without qualifying it...
EDIT: It's actually worse: The page then shows "Look what you can do with Gemini 4" and a "Let's go" button that leads to a bunch of links to examples, all with enticing pictures. Except if I click on them I get a box stat strongly suggests it'll run with Gemini 4, except the dropdown shows "Flash" and if you click on it, it shows as Gemini 3.6 again, and if you run it, the results unsurprisingly end up looking nothing like their pictures.
I don't know if that page was built by humans or AI, but clearly nobody tested it properly.