The "big tech bad" complaints seem valid to me. Big tech companies are willing to accept a certain number of false positives, and that sucks for the people who are caught up in them. Algorithm-influenced decision-making is likely to lead people to change their behaviour to please the algorithm—one obvious example is the oceans of shitty content that we all have to wade through to find useful information because Google's algorithm has led to changes in publisher and writer behaviour.

Both of these are, at best, a cause for concern.