Sounds like a straw-man. I know developers who are good enough to achieve it on their own, but they use the tooling anyway, because one can’t write perfect code always: feature requests might be coming in too fast, team members have different skill levels, dev turnover happens, etc.

Furthermore, memory bugs still can be considered by teams as just another bug, so they might not get prioritised.

The only significant difference is that there’s lots of criminal energy targeting them, otherwise nobody would care much.