This is bad advice based on emotive arguments. Components that were designed in the 1970s aren't a priori bad. E.g. 78xx and LM317 regulators are at least that old, almost as cheap as the sand from which they are made and very reliable.

Instead of throwing perfectly good parts away, better advice would be to properly understand their behaviour and to choose the right part for the job.

He can have my 555 timer when he pries it out of my cold, dead...well...you know the rest...