Not sure I agree with you on SNOPT. There are many many tools out there that I see people use for convex (and non convex) optimization. Especially considering a single license costs $6000 I would be surprised if SNOPT even captured a plurality of solvers in use.
FWIW in my department (Electrical Engineering) No one is using SNOPT for their work that I know of.
Also in EE, and I don’t know anybody using SNOPT for solving any kind of optimization (of which there are many).