I saw that Text belongs to UI part in the roadmap which is partially correct.
Text rendering is needed to display scores, hints, and even work as subtitles, and they don't have to be UI-related.
I think Text entity/element can be reused in UI later when we start implementing UI.
I would add text rendering next to shapes group in the roadmap.
Oh, i completely forgot about that. There should be mention of Text component in the roadmap. Feel free to update roadmap!