It's okay.
But ENTP is in fact the laziest type. Ti-lead grants focus that often yields results. Ne-lead always struggles with closure and absorbs the essence of anything before it needs to materialize, then jumps to something new, typically lacking a sufficient interest in proving or fulfilling. A fitting INTP stereotype is the absent-minded, weird professor and author of genius esoterical papers. ENTP is more like a curious hobo, a flexible conversationalist and avid entertainer of concepts who never gets to work. This is the utmost laziness. Si-lead rigor and discipline is the opposite.
The I/E dichotomy screws people over. Ne-leads are in fact often shy for quite a while, being that Ne weirdness is shunned and Ne constant meaning/possibility scanning may function as potent fuel for social phobia. Jungian extraversion is a different thing from trait psychology extraversion.
I can attest to all of this.
INTPs get so much more done than ENTPs.
Following on from what Bronto said, Ne-doms struggle with committing to any of their thoughts because they're being constantly barraged with new ideas (Ne). ENTPs in particular struggle to commit to ideas because their auxiliary Ti wants so badly to process every one of those thoughts that they often get locked on to the smaller, insignificant details because they seem to be the things that are solveable. This is the ENTP losing control and where the ENTP appears most lazy.
My observations of ENFPs on the other hand have seen that their auxiliary Fi gives them the inner clarity to direct their Ne and know intuitively what they need to do. The ENFPs I know are productive people.
In my experience as an ENTP, I'm so outwardly directed that when working on a problem, if I lose control as mentioned above, I get so stuck in the Ne-Ti loop that I lose a sense of who I am and how I fit in with the problem, which I also attribute to tertiary Fe and inferior Si.
On the other hand, INTPs, while still having Ti and Ne as their dominant and auxiliary functions, still deal with similar issues, but to a much lesser extent; possibly because their dominant function, Ti, is a judging function. Basically, when you INTPs have ideas, you also have the power to process them and do something about them.