you don't know much about Portugal do you, if you did, you would know their economy is as good as any other European country and they won't go knocking on peoples doors asking for money, what type of government does that, yours by any chance ? before criticizing you should update yourself
An Affordable Retirement in Picturesque Portugal
https://internationalliving.com/countries/portugal/retire-in-portugal/
Retire in Portugal – Taxes
Portugal typically taxes all income. This includes pension income and income from international sources. However, as mentioned earlier, the Portuguese government has taken steps to make the country a welcoming place for expatriates. This includes something called Non-habitual Residence (NHR) status. NHR applies to people who have not been tax-paying residents of Portugal in the previous five years. If you qualify, your income is exempt from Portuguese income tax for 10 years. This includes income from work, investments, capital gains, pensions and rental income.
https://smartasset.com/retirement/how-to-retire-in-portugal