It somehow escaped corporate meetings and infected the general public. Just use "changing" or "switching" or even "in transition to" for crying out loud.
These days, I mostly hear that term for people in a gender transition, MTF or FTM. The term seems appropriate in that context, since it is more specific than "changing" and the process is called a transition, not a change. More generally, some psychologists, sociologists, social workers, and gurus distinguish "change" as a term of art to refer to change in external factors and "transition" as a change in internal factors.
"leveraging" likewise. I can't even tell what people mean when they use leverage as a verb. I don't believe it has an actual meaning related to leverage at all.
"To leverage" means "to use as leverage in a negotiation." If I am negotiating with the oil lobby and am on the committee that will decide the approval of new wells, I can leverage that power to solicit large campaign contributions.
"emails" used as plural. I check my email, not my emails. I received some email, not some emails. I hated the use of email as a noun for a single "piece of email" back when that happened, but time and usage have mellowed it to mild dislike.
I guess logically, since pieces of mail are not "mails," email messages should not be "emails." But they clearly are, to basically everybody. I think it makes sense. You can send many things through the mail, including letters, parcels, postcards, and more. You can only send emails through email.