Hello, I use the Linux-Libre kernel. As for the claims, I haven’t heard any distro-specific kernel before, but it might be. After all, the Linux kernel is GPL, so I wouldn’t be surprised if users edited/removed/added code for better battery life / performance, but the real question isn’t if it’s true, it’s “Is this worth my time?” Recompiling the kernel is a hastle, so it’s best to research how much you will gain by switching on your specific hardware before you actually switch. Another thing to keep in mind is how much experience you have with documentation. When I started using GNU+Linux, I would do such things and be surprised it didn’t work after copying someone on peertube. I’m not saying you can’t watch tutorials, just don’t rely on them too much, and always double check information if you are going to use one.