The full article in Open Democracy on 19^th February, from which this comes, makes no specific reference to the UK, presumably accepting, uncritically, it’s high rating, but one commentator, ‘BC’, wrote below:

‘It’s very difficult to take these conclusions seriously. That the UK with its monarchy, unelected second chamber, first past the post electoral system and market fundamentalist economy to be considered a full democracy is bad enough.’

https://www.opendemocracy.net/en/democraciaabierta/qu%C3%A9-pasa-con-la-democracia-en/

They are spot on and highlight the strong attraction for us to become more thoroughly democratic, and get the ‘elite’ dark green shading like our neighbours in Scandinavia and Ireland.