I think the author is correct about the compile / test ratio being drastically shifted in rust vs other languages. One thing to have in mind regardng this, is that in larger companies testing may be performed by a dedicated team. Hence, a shift to rust will give the impression of a much higher workload for the developers. In reallity the workload should be pretty much the same since the bugs from testing still needs to be fixed, but that will be spread out over a larger time span due to going by the test team first.

[–] taladar@sh.itjust.works 4 points 1 year ago

The other thing to consider is that any bug that makes it to the testers or even to production code takes so much more effort to fix than if you had caught the same bug early on. No communication overhead with the testers, no fixing corrupted data in the live database, no scheduled downtimes,...