Huh, I've been using Fedora on my personal T460 for a few years (now on 31) without any major breaking issues. Performs well, upgrades well, bought refurbished for ~$500 of Amazon, bought it extra RAM and an SSD, good life w/standard battery, I can't remember ever hearing the fans run medium/high, uses the standard Thinkpad docking station just fine, and more I'm sure. I'll edit my post if I remember anything worth mentioning.
A few minor issues that seem to get resolved by software updates within weeks of breaking installations:
- The touchpad goes out, so I'll use the red keyboard nub or reboot the machine.
- Sometimes can't use the touchscreen (between larger upgrades) but I don't use this often, it wasn't supposed to have one!
- Screen can flicker in GNOME when bouncing between workspaces (Windows + Page Up/Down)
Even then, these issues may just be my own machine/configuration!
Others have mentioned being wary of pre-installed Lenovo support, and I can agree. While I'd still replace their Fedora for my own install, they'd certainly help my confidence that the laptop was built to fit Linux expectations.