Dunno, in the last 10 years I've had a ThinkPad T530 and an Acer Swift 3 (AMD), suspend has worked just fine on both (Ubuntu and Fedora). My girlfriend has a Dell running Windows she always manually turns off because suspend is flakey...
At this point whether or not suspend works really depends on the laptop and there's plenty of reports of Windows users having the same issues.
IIRC they changed something about sleep states on newer CPUs. Most people who report issues are on Linux, but I've heard about issues on Windows as well.
I have a modern-but-not-new laptop (a Lenovo Yoga 720 from ~2012) and when I was taking it into work daily before the pandemic it wouldn't even shut down properly. An Ubuntu update in 2019 seemed to pretty much fix that. I was running newer kernel builds (stable but not yet adopted by Ubuntu) so that may have also contributed to the initial issue and/or the fix.
Of course I'm writing this comment in support of "Linux on laptops works better now" but I had to opt in to newer kernel builds to get drivers for the laptop...
Zero issues with Fedora 36 regarding that. I do have a Wi-Fi issue where sometimes I need to re-associate, but that typically happens when I move between two APs with the same SSID and seems to be a known issue for that Wi-Fi driver.
Works on the 4.75 year old machine (Sagar/Clevo) I'm typing this on right now. Worked on my 14 year old machine (Sagar/Clevo) that just died last month. Works on HP Omen 2020 unit.
I've not had hibernate/suspend problems in 7-ish years?
I had them for my windows laptop from work. Close the lid with no power connected, put in my laptop bag, walk back to hotel from office, and the unit was very hot. Profile was set to hibernate/sleep on battery with lid closed. Never got that to work. Replaced that monstrosity with a M1 Macbook Pro (work machine).
I have a laptop from System76 (which is a linux vendor). Suspend usually works, but once in a while the graphical UI does not come back. I can ssh into the laptop and restart gdm and it's fine after that.
I needed to do some additional steps to enable hibernate because the drive is encrypted and the default swap was not big enough to hold the RAM. But after that hibernate doesn't appear to work if I have any USB devices plugged into the laptop.
The HP laptop I was running Fedora on had some kind of low power mode on the CPU that would cause linux to crash and require a hard-reset to recover. That meant no idling/sleeping/hibernating without a kernel crash.
With my 3 years old work Dell, I can't say that it has improved in any way. Suspended laptop basically scrapes over the week-end, a 3 day week-end will see me booting from shutdown on the first morning.
On modern Thinkpads, less that 0.5% of the battery per hour is expected, so if you disable automatic suspend to disk (aka "suspend to both") to save a few TBW from your NVME, expect to lose about 10% per day.
Personally, I like that Windows suspend to disks can be setup to only kick-in if a specific power budget has been exhausted: if the laptop has been sleeping for 5 days while disconnected, with 50% of the battery gone, it's neat to suspend to disk so that a week later (or more) it has enough power to resume work.
