Yeah, that's not even close to what I said.
I never said new Let's Go games weren't likely, and I never said that Black and White 2 had any direct bearing on Let's Go. The point was that sometimes Game Freak experiments, is successful with the experiment, and doesn't follow up on the experiment. Yes, they are two scenarios with different circumstances, but the fundamental point is still the same. Not all experiments, successful or not, become fully realized.
The point you keep missing is the fact that Masuda stated that this was a plan of his. He wants to create multiple series, and Let's GO is the start. That's what was in the interview.
Are truly going to insist that Masuda would abruptly throw away this plan, even after its success? You have to remember that these things are planned years in advance. Let's GO didn't just spring up out of nowhere. Thus, the plan for future titles won't either. It is all well planned.