i accidentally pressed enter too early but the problem is that the "fallback" json text component isnt suggested, it only works when the "translate" json component is provided

You mean like for display.Name item component?

Anything that uses text; tellraw, title, display.Name, book pages

Currently it only suggests ' " (for NBT tags) to not confuse json text with normal text, but I have plans to add more complex suggestions for it, including fallback component (probably around version 1.4, as 1.3 will bring support for the new item components). Therefore, I'll keep this issue open.