Here’s a super article. It bangs on (but in a funny way sezme) about poor word choices, mostly in resumes and profiles.
It applies equally well to experience claims in proposals. I spent 30 years in Proposal Land trying to get people to stop doing these same dagnabbed things, and digging it out after the fact (when I could – sometimes, executive override applied).
The general rule? Don’t say/claim it, show it.