It’s the default if no other filesystem type is chosen, starting with Manjaro 25.0.0 Zetar.
It could be that the line is so long that it wraps. But if the grub selection bar is positioned over a specific entry, then you should be seeing a single kernel boot line after pressing E.
Just move the cursor to the end of the line, add a space, and type “3”. Then, pressing F10 should boot the system in text-only mode.
It depends on what exactly you want to do. In the above scenario, your system is in full multi-user mode with operational networking, but without the graphical user interface.
Of course, if you want or need a GUI for system repair, then the live session is the easier option. 