Is this not because of the internet and existing infrastructure which didn’t exist during that time?

It's because the people making it are marketing it aggressively to other CEOs as the way they can eliminate their salary budgets and pocket them as profit, and drumming up FOMO among them so each feels that if they don't hop on the bandwagon they're going to be left in the dust by all the others.

Sure, but that doesn’t by itself mean it can’t be a problem. Maybe the macro scale effects were mitigated by a slow rollout and electrification would have caused an unemployment wave if everyone had done it at once.