If you go for a ThinkPad however there are usually no issues. Plus you can usually fix the power issues by just installing the right drivers or disable one or two well documented settings
They're natively Linux machines to begin with. All the manufacturer-coded power management stuff is upstream in the mainline kernel already.
S3 was disabled on some models which meant for the first 6 months of release you couldn't go to sleep.
The new thinkpad yoga x gen 10 uses a intel webcam which uses a special binary blob and doesn't work out of the box, but only if you buy it with windows installed, which makes for a fun game of "does-this-laptop-support-linux-out-of-the-box"
The thinkpad x1 carbon gen. 6 has problems when waking up:
* Sometimes not waking up until you plug in a power problem
* Sometimes having to disable/enable the trackpad to make all buttons work again.
I'm quite happy with using linux on my devices, but many modern thinkpads have issues.
Edit: didn't want to sound aggressive