^^Yes, of course, but only to the same extent that "Space Seed" and "Tomorrow is Yesterday" were "close enough" to lead people to assume a timeframe of the late 22nd or early 23rd century. My point is that Decker's line was just another rough approximation like those, one that merely suggested the late 23rd century rather than definitively establishing it. It's just one more of the vague and inconsistent hints we got before TWOK locked down the century and TNG finally established a precise calendar year.