Judging by the content of that link, this is probably for Intel based devices. The Apple Silicon based ones are basically giant iPads. I don’t ever remember an iPad having an issue with sleep. And they’ve existed for a decade or more now. I honestly don’t expect to need that link.
The only time I’ve had trouble with Macs sleeping recently is when they have wake on LAN enabled. Switching that off makes sleep work as expected.
I’ve been using a macbook as my main driver for 5 years, never had an issue.