That's not how science works.
If scientists make hypothesis based on prelimary evidence which turns out later to be erroneous based on new evidence, that does not banish them from science. What a silly anti-scientific notion that is.
You're playing the same ideological game that the critics of heliocentrism, antisceptics, vaccinology, plate tectonics, the Alvarez hypothesis, etc. all played.
Real science is based on humility and doubt, not arrogance and gate keeping.
1: No, real science is based on evidence and falsification.
2: I find your gatekeeping statement about science not being about gatekeeping interesting.
Doubt is intrinsic to falsification you silly goose!
>2: I find your gatekeeping statement about science not being about gatekeeping interesting.
Indeed that may seem linguistically ironic at first, until you study the history and how the most ground breaking science has always been persecuted by gatekeepers.
Like a finger pointing at the moon, if you get hung up on the finger, you'll miss the moon.
As far as I know the only way to get a black mat layer with impact proxies is with an impact. For the Chicxulub impact the black mat with impact proxies was the clincher that settled the hypothesis that an asteroid wiped out the dinos.
"Research published in 2012 has shown that the so-called "black mats" are easily explained by typical earth processes in wetland environments.[e][96] The study of black mats, that are common in prehistorical wetland deposits which represent shallow marshlands, that were from 6000 to 40,000 years ago in the southwestern USA and Atacama Desert in Chile, showed elevated concentrations of iridium and magnetic sediments, magnetic spherules and titanomagnetite grains. It was suggested that because these markers are found within or at the base of black mats, irrespective of age or location, they probably arise from processes common to wetland systems and not as a result of catastrophic bolide impacts"
As for, "For the Chicxulub impact the black mat with impact proxies was the clincher that settled the hypothesis that an asteroid wiped out the dinos." the black mats in YDIH are completely distinct from the global KT boundary, not comparable. And the shocked quartz, crater rim, gravity anomaly, expected spherulite distribution around the world, and myriad other pieces of evidence at the Chicxulub site that lined up with the KT bound based on multiple time estimation techniques (as well as much, much better fit with observed extinction patterns in existing biota).
Scientists can be as petty as any pol. The Wikipedia page is "curated" by one of those, a retired historian with no background in geology.
They were off on their comet impact crater age by 57,990,000 years. Thinking a crater was 10,000 years old when it's actually 57,000,000 year old is so fantastically incorrect that it should immediately disqualify the persons proposing it from further part in the discussion. Even if you remove the people from the discussion, no part of the theory stands up to scrutiny aside from a warming trend that's better fit by other less dramatic root causes.