Except that you need them for f/d guidance. And automatic go around as well (which btw in some situations like IMC is far more desirable then a manual one. There have been many accidents due to somatogravic illusions and A/P doesn’t suffer from that).
Certainly on the Airbus setting the thrust levers to the TOGA detent (ie fully forward) triggers the go-around mode anyway (provided the flaps are at least position 1). Trivial to sense this thrust lever position on any aircraft type.