Earlier quoted context omitted.
The key is that hardware has marketpreassure to become faster and faster. Software gets faster if there is market preassure (see gaming & financial). When the feature backlog is more important than performance that is obviously what is prioritized. You obviously can't work on everything.
The feature backlog is rarely more important than performance but you often see it being pushed ahead of nonfunctional concerns for presentational reasons.
For the most part users or companies buy features, not performance. You can have the fastest software ever but if it doesn’t have the features I actually need to use it then, sorry, no dice.
If performance is one of your features then fair enough, but it’s not for a lot of software.