When you consume high cholesterol foods, you’re likely going to have high blood LDL. That’s just physics.

No, that’s not how it works. Please read the paper I cited. That’s like saying we can breathe water because H2O has O in it. Human bodies are very complex. A strict diet can reduce LDL by around 8-15%. Nowhere near the dramatic decline you indicated. LDL is mostly determined by genetics, with 40-60% heritable. Other causes are related to genetic mutations, excess weight, and metabolic issues like diabetes. Less important factors include menopause, age, hypothyroidism, and certain medications. You likely had a comorbidity. From the paper:

Conclusions: In typical British diets replacing 60% of saturated fats by other fats and avoiding 60% of dietary cholesterol would reduce blood total cholesterol by about 0.8 mmol/l (that is, by 10-15%), with four fifths of this reduction being in low density lipoprotein cholesterol.

When you consume high cholesterol foods, you’re likely going to have high blood LDL.

It's not a dose independent response, if you eat only cholesterol (like only egg yolks for a month), you will find adding even more egg yolks does not increase the LDL, the excess gets processed into other nutrients or excreted. The feedback mechanisms in regulating LDL are very good, its just a optimization that food cholesterol can be used for circulating LDL, if you didn't eat any cholesterol at all your body would still make LDL.

More generally Cholesterol, and specifically LDL, is not a disease.

artificially lowering LDL is not actually good for your health. Its far more impactful to measure atherosclerotic risk directly with plaque imaging (CAC for example).