Absolutely true, but that’s not what the author is saying. He said, and I quote:
Objected Oriented Programming is simply not cutting it anymore, specially when it comes to concurrency and parallelism; trying to add concurrency and parallelism to this languages adds lots of complexity and more often than not leads to over engineering and poor performance.
What an overblown statement! OOP is still a very strong paradigm. That’s why it will remain the predominant style of software development for decades to come.
FP has a place, most definitely. Use the right tool for the job. But the author is overstating his case.