It's definitely a more nuanced topic than I think the article leads on. There is a right and wrong time to apply the brakes, but you can still be critical in either case.

There have been numerous times where I have identified real issues with an idea, advocated we crack on anyway and ended up with good results. Often you can't know for sure if an issue will even be that insurmountable until you get to it.

But there are other times where the risk/reward isn't lining up, or the risk is very well known, you've tried it before etc. Then hit the brakes, back to the drawing board for another try.

I think the danger is when people treat ideas as precious. In a well functioning team, your idea is going to get picked apart, modified, morphed and implemented by others. Get over your attachment to the idea as your baby, and you get to really enjoy the process.