The algorithms aren't complex: People who watched video A and also watched video B and were very likely to comment and interact with it, therefore people watching video A should be presented with video B.

It is not making a judgement on video A or B, just that it has noticed the relation. Of course, we now all understand that the most engaging type of content on the internet is the most offensive, negative, and aggressive content. This is no different than much of what is shown on TV, where vast quantities of it are pure garbage, including much of what is shown on the "serious" news channels.

Too frequently, the people writing about this and the politicians talking about it really just want to be the ones to set the line on what is "toxic" and "offensive" and have a very strong desire to influence what Google and these other companies should censor. There's also a very strong contingent of the old guard media that wishes to be restored as gatekeeper and view this as their opportunity.