Some of the very people you've hinted at having read on Twitter are people that a number of us here follow as well. At no point did I see any of them throw in the towel. What I witnessed was realtime discussion of underperformance and potential causes of failure. It was widely stated, and quite obvious, that until the final storms cleared the OKC metro and went almost completely linear that things weren't over.
There's a major difference in discussing potential failure modes, and reasons for why a system isn't yet achieving in a high potential parameter space, and completely dismissing storms moving into an extremely favorable parameter space. No idea how long you've been studying or interested in severe weather, but when it's been decades you learn the hard way not to dismiss threats before they've reached an adequate conclusion. Please don't ever chase because you're unlikely to have the patience or temperament for it.