> Finally once the crater was found, dated and confirmed it was accepted more or less.

This ignores a pretty active literature stream that has persisted since the impact hypothesis was proposed (and which continues to this day) that questions whether this was the cause (e.g., McLean, 1985, Courtillo & Cisowski, 1987, Pope, 2002, Keller et al., 2004, Fastovsky & Sheehan, 2005, Keller et al., 2020, etc.).

> some claim the impact caused the volcanic eruption, the shock waves converging on the far side of the planet where India would have been at the time

This is generally not what is argued for. What has been suggested is that the impact may have triggered a large pulse of Deccan Traps volcanism, but the timing of the start of Deccan Traps volcanism is demonstrably before the impact (e.g., Renne et al., 2013, Schoene et al., 2014, Renne et al., 2015) but timing of the main eruptive pulse remains controversial, i.e., it may have occurred sufficiently after the impact to be unrelated (e.g., Sprain et al., 2019).

> But less evidence for that

This is debatable, viable kill mechanisms tied to either event are pervasive in the literature (as are people pointing out issues with the alternative kill mechanism(s)). Arguably, the idea that neither the Deccan Traps nor the Chicxulub impact alone would have caused the extinction, but that the occurrence of both in short succession was enough to start the cascade is becoming closer to a consensus view (e.g., Petersen et al., 2016, but also the Renne et al., 2013 and Schoene et al., 2019 papers cited earlier). Similarly, there are suggestions that the K-Pg extinction was relatively protracted, perhaps occurred in pulses, and started before the impact, but with a pulse in extinction linked to the impact (e.g., Tobin, 2017)