I disagree with the last part of this sentence. I know a lot of developers, the vast majority of whom have preferred Apple laptops for years, and very few of whom develop in Objective-C and Swift. I agree with a lot of other commenters that Apple are becoming more and more complacent and arrogant about the developer part of their customer base, which I think is larger than perhaps they realise.

I don't see how choice of programming platform & language has much to do with the need for real keyboards, function keys, ports, etc. Nor is it true that most developers using macbooks are only or even primarily 'Objective-C and Swift developers').

It is true, however that those developers I know who have a choice (ie. because they don't have a huge professional investment in Apple's platforms) are seeking alternatives to macbooks for their next replacement machines.