If we can agree it is semantics, than you might call everyone a stakeholder or an influencer of the product — they are not actually doing design.
The literal definition of design is “decide upon the look and functioning.” There’s no way everyone on a team is deciding on something (regardless of who is using Sketch or…
A few notable folks* in the design industry have recently stated (and dug in on) that “everyone is a designer.”
Most of this is a semantic argument. Another part of this is the unfortunate syndrome of know-it-all culture.