Of course Glenn Gould would be "considered" the reincarnation of Bach! But I truly dislike Gould. I doubt there is a single sincere recording of him, that he hasn't cut and combined by sections. This is the truth. Show me a good live recording, and prove me wrong.
I'm "Allegro con brio" (I found this too long, I use now simply my first name

)
So, I don't agree with you:
1. If Glenn Gould cut and/or combined in his recording, he's not the only one. Of course it is the truth! The disc recording is done for that !
2. To say that cut or combined is not a sincere recording (or playing, it's the same thing) it's like you say that a film is not sincere because the playing of actors is cut and combined too !
For me a true disc recording it's like a film and a live recording like a play filmed.
3. However, I don't doubt that exist good live recording, but the problem it's if a musician make a mistake, don't forget that a recording is done (I suppose) for to be listen many times. After that our ear could accustom at this mistake and wait this mistake in a other recording, at the same note.
(Why the live recording are now often corrected ?)
4. Listen the Goldberg Variations in live recording of Salzburg Festival, 1959.
5. I don't want to say that I don't like a live recording but a disc for me don't must reflected a "musical evening". The worst is when the editor let the applauses. It' a non-sense. The applauses are a sense when you participate at the evevement, when you are in the auditorium. But a long time after, alone or in family, at home, in your living room, out of the event, it's disturb the pleasure of the audition of the cd.
Best wishes,
Philippe