You're not going to be able to hire many people with Objective-C experience nowadays. Engineers with 7 years of experience just writing iOS apps will very likely will have only used Swift in their work experience. I work with 2 of them now.
The article author is a solo indie dev. I'm a solo indie dev. We don't need to hire.
By the way, we could be hired, for the right compensation. Nonetheless, companies almost never try to recruit me, but they still whine about how "hard" it is to find ObjC developers. They're not even looking.
Besides, experienced engineers can learn a new programming language. Do you think that every engineer Apple hired before 2014 had Objective-C experience?
