My theory on why were seeing such massive dumps after earnings:
It's retail driven. This new era of retail trading hasn't really seen a bear market. We saw some side ways trading in mid to late 2020 heading into election, but it definitely not a bear market. I've only been investing/trading for 2 years, but looking back at the dot com bear market, I don't see quite same single day massive sell offs from big caps like we're seeing now. Of course, I only looked up about 10-15 companies.
The institutions are probably loving it, as they rode it to the top, sold, likely bought some puts, and now they'll buy it back at a 30+% discount.