The verbiage almost never changes. Each week, when I put out updated SP+ rankings, I say SP+ is "intended to be predictive and forward-facing. It is not a résumé ranking that gives credit for big wins or particularly brave scheduling -- no good predictive system is. It is simply a measure of the most sustainable and predictable aspects of football. If you're lucky or unimpressive in a win, your rating will probably fall. If you're strong and unlucky in a loss, it will probably rise."
Note the italics. Week 2 of the 2022 season gave us some of the best possible examples of how that part works.