In reply to Otto.

Yeah, sort of—I just went to the test site, hit reply, and was faced with the row of icons (blue plus, etc.), and the box below with “Type /”. It took me a couple of seconds, then I clicked in the big box and it changed to a ¶ block so I could type. My point is that if I am going there already with a problem, why do I need those couple of seconds of confusion?

IDK; maybe as most people use the block editor (are we there yet?), that is what they will expect, and not seeing that would be confusing. I just posted my instant reaction.