Flightmachine.space is a bogus website that tries to trick users into clicking the “Allow” button. It displays a deceptive message that states users need to press the button in order to verify that they are not robots. In reality, people agree to receive push notifications. They start getting spammed with annoying pop-up ads that can appear even when the browser is closed.
The creators of such pages do not care about user privacy or security so they may use rogue advertising networks that display ads containing links leading to dangerous websites. Users can end up on pages that try to fool them into providing personal information, downloading PUPs (potentially unwanted programs), and malware.