Expression Engine should always default to Javascript when creating New Project

The expression engine was revamped in 2018, but I'm still regularly answering questions where people have an expression issue - and invariably, the answer is simply that their AE is set to the old engine. They certainly aren't doing this intentionally, as most of them never even knew this setting existed. 

Opening a project built in an earlier version seems to (rightfully) revert the engine to the Legacy Extendscript, but then this setting sticks for subsequent new projects they create, and eventually creates a problem they never knew they had to solve.

Would it be possible for new projects to simply force this setting to Javascript, versus holding onto the settings from a previously-opened project? Is there any benefit to this setting being accidentally held like this?