Some, like the pair trading models or the classic section don't seek to beat the market, but try to minimized volatility regardless of market or provide an easy "all weather portfolio" one can save their emotions by happily holding regardless of the market direction.
In the future I want to add more that index FAANG companies, that hedge against inflation, that take advantage of binary outcomes or that focus on income instead of appreciation. In short, many of them beat the market and do so with less risk (look at their Sharpe ratio), many don't because they aren't seeking to.
Their goal is to smooth out volatility, at the cost of performance. Instead of "100% VOO", they invest in a more balanced portfolio like 80% stocks/20% bonds. This means at any given point your portfolio will not have big swings in value, in case you need to withdraw money (like to buy a house) at a sub-optimal time.
I don't like the term algo-trader so much, because these aren't all speculative nor do any of them day or swing trade (like the name may imply or connote). They're more like investment strategies packaged in a box ready to run. They're years of my experience in quantitative finance condensed into runnable models, easily investable and distributable by anyone with or without the specialized financial knowledge or coding experience to do so on their own.