Apple has always very tightly controlled what components go on their mobo's, and wrote their OS and application stack with that specific hardware in mind. I've

Apple has always very tightly controlled what components go on their mobo's, and wrote their OS and application stack with that specific hardware in mind. I've had a 2017 MBP: it goes to sleep, continues to check email etc, and wakes up the next day with an almost full battery. I don't have any M1 Macbooks but I can imagine they could stay awake and have 90% battery left the next day. Macs also continue responding to pings and accepting SSH connections on wired Ethernet while sleeping. I've had less luck with inbound SSH over Tailscale, but I can use any other device on the network as a jumphost.