Not likely. Modern software developers laugh this kind of difference away, and will almost always default to taking a memory/storage space hit over other possible trade-offs (performance, correctness, convenience...)
Considering storage/memory requirements for modern desktop/mobile apps, I wouldn't mind if developers would occasionally think about optimizing them.
Nah, we computer scientist are happy embedding electron into every application no matter how small.
Storing non-numeric data as strings is not what makes modern apps bloated. It's the technologies used (Electron) and a general “I don't care” approach.
Application developers not system engineers. People who work on high performance servers will always look to reduce overhead as much as possible.