I don't think you know what you're talking about. Living in Portugal while remotely working for any semi decent tech company puts you in the top 10% earners easily
However the rest of the post is about right. Salaries in Portugal are exceptionally low and taxes are high and both make the country not competitive - were it not for the sunshine and beaches.
On the other hand, the young Portuguese have been leaving the country since 2009. Millions of them earn salaries in central and northern Europe. They left without any nomads coming to Portugal.
Shouldn‘t these millions benefiting from european freedom of movement justify a mere 20k nomads in Lisbon?
edit: Maybe it‘s not millions but only half a million.
Portugal is making very little money from its emigrants anyway. I doubt they have more than 100k nomads, i suppose most of them would live in the biggest cities, and while they make the housing problem worse, most likely the problem would exist without them because portugal has the same structural problems with other southern eu countries. (Plus nomads by definition move elsewhere over a short time)
And seriously, profligate spenders generally seem to have income sources that quickly replenish their coffers. Or they are owners and have those kinds of tax advantages. Or, they inherit. There is a generational shift in wealth going on.
Actually, for 2021, earning 40k€ per year puts you in the top 10%. 4 in 5 families earn less than 27k€. Less than 5000 families earn more than 250k€. Top 1% is 100k€.
This is for a population of about 10 million.