Ok great, you've switched to a language which eliminates a class of memory bugs. Now what do you do about every other type of bug that exists? You still need t

Ok great, you've switched to a language which eliminates a class of memory bugs. Now what do you do about every other type of bug that exists? You still need the exact same sort of comprehensive testing infrastructure, policies, procedures. You've perhaps marginally reduced your overall bug count at the cost of everything that comes from switching to a new language. Doesn't seem like a particularly great decision.