Nope. This is really just making your GUI work better with the keyboard. Editing text is fundamentally different than manipulating a graphical interface, so this doesn't mimic any vim functionality (with one exception: when this app is in scroll mode, you can use HJKL keys to scroll windows contents.)

It's very much like Vimium, which is nothing like Vim, so no. I see Vimium being referred to as "vim bindings" for chrome which I never got. Maybe someone could enlighten me on this.

There are some bindings that are the same as vim (gg, G, /, i, v, etc.). But overall I wouldn't say it helps you learn vim.

well i mean vimium implements a lot of similar bindings from com.

navigation visual selection find scroll

You will be some part of the way to knowing navigation in vim.