Thank you to Steve Cox, creator of the Gorizont Linux distribution for letting us know that is has now been updated to the 2022.1 Edition. Gorizont-linux is an RTL-SDR focused Linux distribution based on Xubuntu 20.04 LTS. It comes in a bootable .iso image for easy installation. Steve writes:

[Gorizont-linux] is still an Xubuntu 20.04 LTS based bootable .iso image for RTL-SDR only, but I've put a lot more work into writing instructions in simple English, refining things and freshening everything up to the latest available release. Here are some highlights:

gqrx 2.15.8
SigDigger 0.3.0
Universal Radio Hacker 2.9.0
gqrx-scan
Welle.io 2.4 for all your DAB and DAB+ needs.
guglielmo v0.3 for simple FM radio and DAB reception - fast, quick and light.
Baudline
fldigi
fmsg
Due to multiple issues with linux versions of Dream DRM, Dream DRM is now installed as a Win 32 .exe running under wine. It works!
w-scan for creating DVB-T/ATSC/etc. scan files for DVB TV viewing using VLC.

Various extra utilities in home folder and command line path
Much clearer instructions and scripts in simple English.

NOTE: Due to current events, gorizont linux now ships with networking disabled on boot. To use internet in a trusted environment, left-click on networking icon to the left of the battery indicator and click 'Enable Networking'.

If I was about to have to flee my home with little more than a laptop and a rtl dongle, this would be my distro of choice for staying in touch with the outside World - fast and easy to use,  yet packed with (other people's) good software.