One important point worth making here is the correlation between radiometric age and distance from the hotspot, and also how it lines up precisely with rates of continental drift measured directly with high-precision GPS readings.
The only young-earth attempts to explain this that I’ve seen hand-wave it as “both making the same assumptions of uniformitarianism,” but that argument simply doesn’t make sense. Any non-uniformitarian model would have to have nuclear decay rates accelerated by a factor of many millions in complete lock-step with continental drift. If there were any lag between accelerated nuclear decay and catastrophic plate tectonics, the correlations would break down. If they weren’t linear, the correlations would break down.
Then when you introduce other things such as erosion, coral growth and sedimentation rates, that introduces a whole raft of other things they have to explain – how could these have increased in complete lock-step with each other as well?