In addition to your in addition, the experience gained learning and using a proprietary framework isn't "resume-able" in the same way putting React or Angular i

In addition to your in addition, the experience gained learning and using a proprietary framework isn't "resume-able" in the same way putting React or Angular is. That could mean a significant difference in salary, and it's also why I'm shopping around for new work right now. Like it or not, it matters.