Agree. Especially how easy it is honestly to learn hiragana. You can practically learn it in a day and keep a table next to you to look up every time you forget one.
If you're at the point you're learning verbs you'd be mad not to know how to read some kana.
I explicitly address my reason for choosing it over kana in the article. If you disagree, please engage with the argument that’s already there.
The benefit you give (be able to "cut" a kana in the middle) is really weak, I've never seen anyone being confused by that when learning in kana.
This is completely nullified by all the drawbacks of using romaji while learning and they're well known already.
The only reason to use romaji for Japanese grammar is to explain the concepts to someone who has no interest in learning the language, just for their general knowledge.
Part of conceit of my article is that I wanted a person with zero knowledge of Japanese to walk away with ability to conjugate almost any verb to almost any suffix in a single evening. I also wanted the visual notation to work and I don’t consider that motivation weak. Maybe this helps frame it.