Erm, no. Speaking as someone who was raised on ideas like this.

This is convenient for others, but not for you. They will take advantage of you if you think like that and you not be seen as leadership material.

Either challenge it, leave or find a way to prevent that next time. If you truly have no choice but to put up, then you have no choice. But don't be naive doormat.

It depends on your professional goals. If your goal is to be esteemed by your peers then you are correct.

If your goal is to see how much good stuff you can coerce into existence for the company then it doesn’t matter who does the work, who takes credit, or even whether anyone realizes anything happened. All that matters for you to hit that goal is the stuff getting done.

Tolerating ideas stealing (and other sorts of toxicity) is not good for company either through. Because what will happen is that people who steal ideas will go up and others will grow resentful or will stop sharing ideas. Not reacting to things like that enables it and makes it more frequent. If you want to be leader, you have to be conscious of shaping culture and this is part of it.

Also, leader needs to be able to protect team or company from under-the-belt attempts of customers, suppliers, competitors and such. Some of them will try that for sure and it is leaders job to deal with it.

Who would downvote this and why? Do you think that tolerating ideas stealing is good for company? Or that it does not matter for culture?

Or that leaders are not responsible for shaping culture?

Or that leaders are not responsible for protecting/ensuring that company looks capable, creative etc to outside?