it’s _very_ easy to calculate your impact, or the one of your team, when you work on meaningful projects. if that’s not the case, you are probably working on non-essential things.
There are definitely people who are impactful enough and deserve to make bold "I" statements but they are in the vast minority.
Also it sounds like a toxic culture if you have to constantly try to tie your day-to-day work directly to how it impacts new revenue and profits or else your work is considered worthless.