For the same reason that archive.org's begging is tolerated, obviously. They provide a unique, irreplaceable service that can only be sustained by charitable contribution.
(Never mind that OP is asking disingenuously, just adding my vote.)
"I don't understand how virtual memory systems work, but I know that if I write an article complaining about <new Apple thing> I'll get a ton of traffic".
The Activity Monitor screenshot in the embedded tweet even explains what's going on. The system has 64G of physical memory. A bit less than 50GB is in use (so 14G is completely idle, wasted). 7G are wired (kernel, device buffers, etc.) and can't be paged. 38G are in used caching things for applications, and about 180G worth of compressed data (mostly zeros I'd say, since it's only using 5G of real memory) has avoided being paged out.
There is literally no memory pressure in this system, and no evidence of leakage in those numbers. Darwin deliberately tries to keep as much DRAM as possible live to minimise page-in and decompression costs; it literally can't find anything worth paging in or decompressing to fill those last 14G. That's a vacuum, not pressure.
I'm not going to debate the stability issues that the article author is complaining about; I do hope they have all of the crash reporting features enabled so that their crash data can be used by the various developers to help fix things.
But I would hope that before writing yet another stupid clickbait article, they pick a topic they know something about.
Having seen the coalface, the problem is not the OS, it's the (stupendously retarded) application model.
There's very little (interesting) you can do when application developers are (for the most part) incapable and unwilling to embrace anything even remotely different from the DOS application model.
The OS is, at its heart, a mapping from that application model onto the hardware. If a hardware feature or characteristic can't be expressed / surfaced within the application model, then there's little to no value in attempting to exploit it.
Someone like at least has internal customers, and a vertically-integrated embedded system can sometimes do better, but general-purpose systems are shackled to some minor variation on the POSIX application model for the forseeable future.