I'm not sure where this common misconception about us not liking PF2E comes from. Seems that it's from some very old interview by one specific developer, which is no longer relevant for years now. Things evolve and change, and there's definitely people who enjoy PF2E in the studio, too.
The realistic argument why PF1E would be more favorable in case of a hypothetical next PF project, is that there's so much mechanical content already made for PF1E in our games, that it'd be a huge waste to simply drop it all. And overhauling it would be... Costly, let's call it that.
But either way, nothing is set in stone on this.