This statement is completely wrong. There are millions of engineers in the world and most of them live in countries like China, India and Russia. Very few of them use MacBooks.
The vast majority of the software engineers in big companies (that employ a lot more people than big tech and startups combined) who use Java and C# also have predominately Windows laptops (as their employers can manage Windows laptops a lot easier, have agreements with vendors like Dell to buy them with a discount, have software like AV that doesn't support MacOS, etc.).
On top of that MacBooks don't have the best screens and are not the best built. Many Windows laptops have OLED screens or 4K IPS screens. There are premium Windows laptops made out of magnesium and carbon fiber.
I'm an American, so maybe the situation is different elsewhere.
Every company I've worked for during the last 12 years gives out MacBook Pros. And I've been developing using Scala / Java for the last 20 years.
Employers manage Macs just fine, this isn't 1999. There have been studies showing that Macs have lower IT maintenance costs compared to Windows.
I admit that I haven't dealt with Windows devices in a long time, maybe there are some good ones available now, but I find your statements to be beyond belief. Apple Silicon Macs have blown the doors off the competition, out performing all but top-end Intel laptops, while using a fraction of the power (and I never even hear the fans come on).
The vast majority of the software engineers in big companies (that employ a lot more people than big tech and startups combined) who use Java and C# also have predominately Windows laptops (as their employers can manage Windows laptops a lot easier, have agreements with vendors like Dell to buy them with a discount, have software like AV that doesn't support MacOS, etc.).
On top of that MacBooks don't have the best screens and are not the best built. Many Windows laptops have OLED screens or 4K IPS screens. There are premium Windows laptops made out of magnesium and carbon fiber.