Macbooks are a joke. If you ignore the CPU upgrades how exactly is the new Macbook Pros any better than the 2015 one? I would argue they are actually worse in many regards
That's hyperbole. Yes the releases are now every 6 months, but there are still long-term releases that have support for at least 3 years.
The bi-annual releases aren't for companies to upgrade to every 6 months but for power users who like to experiment and try out new bleeding edge features. Same as with Ubuntu releases for example.