I'm not saying that there isn't a housing crisis but that article is a huge pile of BS.
I'm not familiar with Paris but I doubt there are a lot of furnished studio apartments compared to ones without furniture so the 6 months seems like cherry picked data.
Also the part where they talk about rent prices compared to median income is just wrong:
In London, the average rent for a one-bedroom flat in the city centre is now nearly €2,500 per month. The sum is more than three times the median monthly wage in the UK.
So you're telling me the median monthly wage in the uk is ~800€, yeah right...
The same thing is happening in Amsterdam, with the average rent being over €1,500 per month, more than two times the median wage in the Netherlands.
Oh and in the Netherlands it's less than 750€?
A quick google search tells me that the median wage in the uk is ~2600€ and for the netherlands I couldn't find a value for the median wage but the average in 2022 according to statista is >4000€ a month.