Telling specific people who can help is good. Telling many people is bad.

With projects I've done at work the more people who know means more people to slow you down with their ideas. Or even delay you on purpose because they're not interested in a potential change.

It sucks cause my primary role is process improvement projects. Great role for ADHD people who thrive in change. But hard from constant delays to deal with normies not interested in change. I've had to get really good at reading people. Figure out what button to press to influence them towards agreement.