From everything I've read, 32 bit float recording is just another step in this evolution, making it almost stupid easy to make a good recording in the field. The notion of "set it and forget it" is realized to the point that only operator errors like forgetting to hit the record button can get in the way.
Perhaps I'm at risk of picking on something you didn't quite mean the way you worded it, but there's a danger all the way through this discussion that we're saying that a recording which does not suffer from clipping at one end or noise at the other is a good recording.
In recent years, I doubt whether any appraisal of the real merits of a recording by any competent recordist will have included comments about poor level setting. A good recording in the field is still, and always will be, dictated first by the choice of microphones and their placement relative to the sound source. Next, these days, comes the choice of preamp, and last in importance is the choice of recording device, and the format used to record in (bits and sample rates etc). That's not to say it is of no consequence, and of course all items in the signal chain have to be matched at a technical level and at an overall quality level, but it's dangerous to risk any statement that devalues the fundamental skill that separates a competent field recordist from a beginner, that of mic selection and placement. We have to be careful that we don't make statements about recordings that are the audio equivalent of "that's a great photo, you must have a fantastic camera".
From what I'm reading above, choice and placement of mic is even more important with these devices. This now becomes the equivalent of level setting - which has been moved from a knob to the mic, and if you've got it wrong your amazing new recorder can't help you. As always, put a hot mic close to a loud source and you'll still risk clipping - or an unhot mic too far from a low level source, and you'll still risk noise (apart from all the other considerations affecting mic placement).
However, I do agree that we're seeing an important new phase in the development of audio recorders - we started with 14 bits (effectively, as I recall it), then 16, then 24, and now 32 bit float, and then... perhaps we're at the end of the road.