The article sounds pessimistic but the Polish society has been evolving - especially young generation has been slowly diverting from faith of their parents (number of young practicing Catholics in Poland has been lowest in history) and is capable of critical views, see e.g. the movie Clergy that was watched by most Poles.
Therefore, I don’t think that excessive external pressure on fast changes can help. Other conservative countries like Ireland, Italy or Spain were able to come through the evolution without external pressure too. And in England we could see that Turing was forced to kill himself because of homosexuality 65 years ago and today he is portrayed on the 50-pound banknote. Changes need some time.
However, it is true that the changes around the world has been slowing - not only in eastern and southern EU members, but we can see countries like the USA, England, Turkey, India, Brazil, South Korea, Philippines, etc. - all of them elected politicians who want to resist fast globalization and forming universal world people out of their nations. I guess the main reason is that development in excessively globalist liberal countries is not attractive for citizens of many countries in the world anyomore. For example, the demographic, social and security situation in old EU members scares citizens of new EU members rather than being a role model. That’s why more people turn to nationalist / populist politicians who promise to preserve the current situation in those countries than they would if situation in Western Europe was shiny. For this reason I think that old EU members can better influence the situation in new EU members indirectly by showing that their models work well (and vice versa - if they don’t work well, the counter-pressure to keep their own ways in new EU members - and around the world in general - will be higher).