'A valid Vaccination or recovery certificate issued by a third country, under reciprocal conditions' - is the requirement per the visitportugal website. The UK(a third country) govt has granted the EU Digital Certificate recognition, that is reciprocal, therefore the implication is that the NHS vaccination certificate is now valid for entry into Portugal without a need for testing. Why does this site not make this explicit, as is the case for government agencies in Belgium , France, Spain etc.? Does Portugal not want people from the UK to visit?

This is directly from Portugal US embassy website as of today: To enter Portugal, both Portuguese and foreign nationals must present a negative RT-PCR test, done 72 hours before departing to Portugal, or a Rapid Antigen Test, made 24 hours before. Children under 12 years old are not require a test to enter Portugal. Citizens from European Union Member States may use the EU Digital Certificate, instead of the negative covid test, as proof that they have been vaccinated. In order to get this certificate, citizens have to contact their respective national health authorities.

According to your rules for entering the country you need a valid EU Digital COVID Certificate. Is such a certificate where you have taken one out of two vaccination shots valid?