This sort of logic is why most games end up being abandoned.digi.B took around 18 months to develop Chapter 6, and I assume that Chapter 7 will probably take just as long. Quality takes time.
I think June 2026 at the earliest would be realistic.
DigiB's quality took an average of six months for each update until life threw a bunch of curveballs. That is why Chapter 6 took a year and a half. I really hope this game gets completed. It has little to no chance of that if the following updates take 18 months or more each to be completed. The simple reality is devs lose their focus and drive on such a long time scale and they lose a lot of their audience.