Yes, obviously. I've pointed that out myself on several occasions. But in real-world terms, that could just be the producers paying homage. When George Lazenby showed up as "J.B." in The Return of the Man from U.N.C.L.E., that wasn't "official confirmation" that TMFU was set in the James Bond universe, it was just TMFU's producers paying homage to Bond and winking at the audience.
You keep talking about "evidence," but what you're forgetting is that evidence can fit multiple models. You can't be certain one model is correct until you've ruled out all the viable alternatives. As it stands, the evidence is just as consistent with the idea that it's simply an homage as with the idea that it's an in-universe "reality." Heck, since it's all fiction anyway, the difference between the two is rather blurry.
Anyway, I don't see why you have a problem with my choice to keep an open mind. I don't object to the idea that the '90 series is part of the multiverse; in fact, I think if you look back in the thread, you'll see that I proposed it myself even before last night's episode. So I'll be quite pleased if it's true. But so far, it's not "officially confirmed" yet, just hinted at.