Most CLI/TUI programs have integrated help. Anyway, I have to remember most of CSS, HTML, JS builtins, all kinds of syntax, posix API, std. C library, so bunch

Most CLI/TUI programs have integrated help. Anyway, I have to remember most of CSS, HTML, JS builtins, all kinds of syntax, posix API, std. C library, so bunch of shortcuts or commands in some weird ass MUA like mutt (I probably use 10-15 commands/shortcuts regularly), really doesn't add much. The problem is that GUI/web programs are typically not easily extensible or composable. Though thanks to popularity SPAs, at least some web programs can be integrated with via internal REST APIs. CLI tools don't usually have this problem. Even if GUI tools have some scripting, it usually is ad-hoc and may not integrate that well with the rest of the system. On the CLI side, you have a scripting system (shell) in which you're able to run and combinine all your tools.