It’s neither awkward nor slow, it’s just tooling that sucks (we have to type in a bare textarea, which is designed for text). Add some helpers and keys to the keyboard and it’s done. Like an email field makes your on-screen kbd have @ and . characters, you can add {} and [] and autoindent.

Best for thinking is actually walking around, while not being distracted by anything else.

Fwiw my best ideas were born in a bathroom.