AFAIK macOS doesn't care if you add another partition in diskutil and install Linux on that through the usual live ISO's. But please make sure you:
Answering the question you meant to ask, blueray is a physica... just kidding.
LocalSend is basically like bluetooth file sharing over WiFi. Bluetooth, especially the fallback 2.0 is notoriously slow and short ranged. The situation got better with BLE, 5.0 and Long Range. Still, both devices need to speak BT. Ap*le's iOS is well known to ignore BT file sharing capabilities while implementing own proprietary solutions. On desktop, the situation is still bad. I once tried to send a file between two Windows machines via BT, and it was a horrible user experience. LocalSend (and similar) fix this by implementing cross platform apps and using readily available API's to share files with few clicks and reasonably high speed between a plethora of devices. I guess, if you don't have the aforementioned problems, you won't need LocalSend et al.
Really great software. Works like a charm most of the time, the apps are quite okay, sends files locally. The first low-barrier solution to share stuff between wildly different devices since e-mail.
more like intentionally installed malware but yes, 100 % this
!lotrmemes@midwest.social would love that meme
AFAIK if you buy any computer from within the last 20 years, there's a good chance you can get a 6.X Kernel running on it. 32-bit support is fading out, though. If you buy a 64-bit computer, you'll be able (with sufficient RAM and hard disk space) to install any modern distro on it.
I guess, the browser is kind of the replacement for the OS in OP's case, which is again, a nonfree OS/browser.