since commercial usage is not free

Commercial usage oft the osm data is free, see the OSM license. The article even speculates that they switched from Google maps due to licenses costs.

Of course this doesn't apply to commercial services that provide e.g. map tiles.

Having the commands listed at the bottom by default is one thing i personally dislike about nano, because they take up space while being useless to someone knowing the commands (or at least knowing how to open the help in, which is what you can do in vim to achieve the cheat sheet). The alternative that vim uses, is to show the commands when starting the editor without opening a file.

afaik yes, at least the arch kernel has selinux enabled, but you need to install the user space tools from the AUR.

I think a tag system as suggested by others makes the most sense, as NSFW and NSFL aren't mutually exclusive.

These shortcuts aren't provided by the terminal or the shell but the readline library (or zle if you use zsh), which can be configured using the ~/.inputrc file.

Easyeffects is great, or use the eq built in to pipewire to avoid an additional dependency: wiki.archlinux.org/title/PipeWire#Systemwide_parametric_equalization

I don't know of one, but why not install gnome on Mint (or Debian)?

I exclusively use podman instead of docker at work and at home and haven't encountered any unsolvable problems.

You don't even need to look at the extension to identify most file formats, as there are unique magic numbers stored at the beginning of most (binary) formats. Only when a single binary format is reused to appear as two different formats to the user, e.g. zip and cbz are extensions relevant. This is how the file command and most (?) Linux file explorers identify files, and why file extensions are traditionally largely irrelevant on Linux/Unix.

This means your idea of suggesting software based on the file type is even more practicable than you described.

It should be possible using the address overlay in the app. Otherwise you could leave a note or use the web based editor on the OSM homepage.

I would consider that ifconfig is deprecated on many distros and would therefore teach about iproute2 (mostly the ip and ss commands) instead. Additionally I would consider editing files essential, even if it is with nano.

Maybe mention more modern and simpler help tools like tldr, as they could be even more useful to beginners.

To introduce the shell and utilities, I would try to find a somewhat realistic use case that combines multiple aspects, like analyzing some files or spellchecking instead of simply mentioning every feature one by one.

I use both versions actively, the main differences of SCEE compared to StreetComplete are the addtion of more obscure questions (for example building and roof colors, species/genus of trees), allowing direct editing of tags and disabling the gamification/statistics.