Reading the article, seems a lot like misinformation. Down voted.
I have a Lenovo Thinkpad L13 Yoga with Mint and touch screen works perfect. Only thing not configured yet is screen rotation.
Also works fine with an external USB-C touch screen with extended desktop, but a command to re-position touch location is needed, and when going back to internal screen only (haven't automated it with udev rules yet).
There is a KVM equivalent on MacOS, Apple's Hypervisor virtualization framework.
KVM is just the kernel side, you need QEMU (for example) on userland. On MacOS you have now UTM.
Somewhat of a click-bait headline and article.
By itself, Signal is one of the most secure communications software, it is encrypted point to point with a different cypher per message and the cyphers are already prepared to withstand quantum processing.
The issue is not Signal, is the fact this moron was circumventing security measures as member of the government.
If that's the only way you can comment this, says much how low you are. I'm no nazi, quite the contrary. And misinformation has to be fought. On both sides. You wouldn't know a nazi if one was right in front of you.
At this moment much that comes from US based sources isn't reliable, specially with Trump in power who is a crony for Putin.
This war shouldn't have started at all and it is all Putin's fault. Best way to "win" the war? Russia retreat and give back the territories. Too many have already died in this stupidity, on all sides.