Pride like all words has no real meaning, but multiple usages, a short search on line turned up just one encyclopedia which gave seven or eight. Including.

1. satisfaction derived from one's own achievements

2. consciousness of one's own dignity

3. the quality of having an excessively high opinion of oneself or one's importance

The first I think is the one you are using. The second the one the people you are talking about are using, and which is perhaps best described as the state of not being ashamed of who you are, the negative of shame.

While the third is of course the negative form of pride itself, usual called the sin of pride, and a synonym for hubris or narcissism. And we probably do live in an age of narcissism, since in part we live in a religious or post religious age, and religions main role in human life was always to promote narcissism.

" You are so special: you will live forever, you have a special super powerful friend, you are given special understandings of the universe, not given to members of other groups, etc. etc. "

Which of course they traditionally did, because if you over inflate something like narcissism then it becomes a fragile bubble of empty pride, which has to be constantly protected, and inflated over and over again. Nobody is therefore needier than a narcissist, and nobody therefore keeps coming back for more, more reliably.

When the definition of pride is :

'confidence and self-respect as expressed by members of a group, typically one that has been socially marginalized, on the basis of their shared identity, culture, and experience'

do you have misgivings?

I am merely me. I leave it to other people form their own assessments of me.

Nationalism/ Patriotism fall under the same philosophy.