How else could algos work ? ..
If it walks like a duck etc ..99% of the time it will be a duck..the occasions when it isn't ..are collateral damage that they are prepared to accept..
What I do take issue with them on though is the damage to SERP rankings of "innocent" sites inherent in the mysterious "shuffle" used to befuddle and identify those who zig zag in response to Google's moves..added to which, even the algorithmic manipulations of SERPS so as to ensnare and ID the SEOs, means that their stated aim of providing the best quality SERPS is not always adhered to..means "the SERPS are the best quality we can give the visitor, except when we are screwing with them for whatever reason we have today"..and there may be very very many "todays"..
But that does fit their "keep it mysterious" and "rule by implied guilt and original sin" concepts that they have adopted from religion..