IMO it is not entirely dead, but not really "alive" either. TIOBE even has Object Pascal mentioned right now in TOP 20. Now, TIOBE has tons of issues, but it also means that there exists some tangible interest.
Still, I don't feel many people want to use Object Pascal these days. If you have the choice between Python and Object Pascal, most people will undoubtedly use Python. It's just how it is right now, and I also don't see how that can change in favour of Object Pascal. Programming languages nowadays have so much more competition, and people are less tolerant of flaws. Strangely enough, people barely seem to work on these flaws; this is one of my pet peeve with ruby, the documentation should be much better but it is not. I no longer find that acceptable in 2026, with AI spam slop lowering the quality and google search being terrible and almost totally useless nowadays. You'd assume that a counter-move to this slop-degradation would be to massively improve documentation, but you still find core projects in ruby or at the least important add-ons, to have low-quality documentation. And barely anybody wants to improve on that either.