It could go either way. Some places will like and promote one to do different/more interesting things. Other places will eliminate the position with k, thx, bye! Moreover usually people have only so much energy to be always concerned with job / career growth/ changes etc. They are fine their little pieces of knowledge that make them useful at work in a unique way.
If your company has a habit of firing people that share information, or punish employees who work smarter instead of harder, it’s a sign that they might be out of touch with value creation and will eventually be punished by the market.
Being fired from such a place might actually be a blessing, not a curse.