Yes. Makes perfect sense. Nolan fucked up the entire ending of his movie because he couldn't edit-in a CGI top, loop the shot of the ending, or do something along those line to make the top seem to spin without failing. Nope, he fucked up and through the editing, screening before signing off on the final edit of the film and all of that he left the failing top in the final cut.
Brilliant. The ending of a movie fucked up because a director forgot about physics.
The lengths some people will go to.
If it had continued spinning perfectly after so long, there'd be no ambiguity that it was a dream. If we actually saw it fall over, there'd be no ambiguity that it was reality. Both would've failed the intent of creating ambiguity. So it wobbles, but it doesn't fall. May recover, probably won't. May disappear and reappear laying on a completely different table.