From working with OpenWRT for years on embedded systems where sometimes 128 bytes made a difference: this is not a useful question. In the embedded space, you

From working with OpenWRT for years on embedded systems where sometimes 128 bytes made a difference: this is not a useful question. In the embedded space, you use small effective languages like assembly and C. You either design for explicit memory use entirely, or you systematically test for memory usage and waste - especially if you're delivering industrial applications. The so-called "memory safe" systems tend to be very expensive for memory usage and space, and not worth the investment. Usually, anyway. This may change in the future but it's a bad change if it comes with additional power usage requirements and the environment also requires minimal power use.