Instant-ETH account are automatically refunded to your ETH address when your balance reaches 25 000 000 Gwe
That's just another proof, this setup originates from a time LONG ago when ETH was worth WAY less than it is today, when the faucet paid WAY more than it does today, when you would reach 25M Gwei in a week or two.
After the value of ETH has increased, they simply never adjusted the faucet, which indicates, they have abandoned it, or do you TRULY believe they'd pay you 25M Gwei, while that's worth several 100s of dollars?
Even after the recent collapse of prices, 25M Gwei is still about $100.
..... and then, what do you make of the fact, their list of "last transactions" is completely empty, meaning they never paid anything to anyone?