Completely agree and actually think this is the root of the problem.

People look at what really big successful companies are doing and draw inspiration from that. Problems come when they mix up cause and effect, and then view things through the wrong lens.

As you say, microservices are a mostly organisational, partly technical, effect of having to scale a huge techincal org. But then when taking this end state and viewing it purely through a technical lens (as, naturally, technical people are wont to do) it's rather easy to convince yourself that it's actually the cause of this huge technical org's success.