The big difference between this and the Rejected in a Dream is that the couple here still clearly has some stuff they need to internally push past before becoming a couple, so this’ll be forward progress even if nothing else happens. The couple in Rejected in a Dream, by contrast, were THERE. They had the mood, they had the kiss, they both knew what they wanted. All they needed was one more step to officially become a couple, and then a wall randomly appeared at the finish line to delay them.
I would say Tsukushi does absolutely have some stuff to internally push past too, I mean that negativity she got is absolutely pathological to the degree of being self-sabotaging. That is not just a random wall but one character's very real psychological problem that has been present constantly in previous chapters too with Yuu and Sara being baffled by Tsukushi's conviction that she'd get rejected.
But I do absolutely agree with your point about this forehead kiss being progress even if there's going to be backpedaling next chapter, I fully expect some sort of mild angst coming up which will ultimately help our MCs progress with their relationship.