> Boom, less engineers needed to produce novel products or features, more engineers on the market, depressed wages.
Possibly. But software is funny - increased software productivity tends increase demand for software. Perhaps the job market will be saturated, but perhaps the market will simply grow.
Addressed in the following paragraph of that post. Certainly possible, but likely the result will be a ton of new startups than larger tech companies ballooning their ranks - as this gets better, those will either stay the same or be reduced. IOW, the fat big tech comp the OP is stressing over won't really be a thing at scale anymore. Time will tell, but that's my prediction.