Yes, just because some famous pianist does it doesn't mean you should do it. And for Gould, his musicianship is very questionable, and that's being very kind. He's not someone you should imitate. Ever.
The walking bass should not be detached. This is the cello line - would it sound like music if played alone, without the soprano and alto voices, in a detached manner? T h a t i s v e r y a n n o y i n g . I s i t e a s y t o r e a d w i t h a l l t h e s e s p a c e s ? P r o b a b l y n o t . I s t h i s c o n s i d e r e d a p p r o p r i a t e w r i t t e n E n g l i s h ? S o w h y i s i t o k a y to p e r f o r m m u s i c l i k e t h a t ?