All incorrect.
When commercial aviation was "a luxury", total fatalities began a steep climb. 1200 in 1961, 1800 in '72, 1700 in '96. After Congress INCREASED the minimum required flight hours for commercial pilots to be licensed as such to 1500. Since this law in 2012, fatalities have plummeted. With the huge shortage of pilots looming, the airline industry recently tried to cut the requirement in half. The FAA refused. There is no "rushing through training--it is longer now than it had been for decades (when flying was "a luxury").
From 11/03 to 11/04, less than 1% of flights listed as weather delays and 1.71% cancelled. From 11/23 to 11/24, 1% weather delays, 1.26% cancelled. Nothing has changed.
Boeing certainly has it's quality issues. But planes in service have incredibly complex and rigorous certifications and scheduled maintenance that are ongoing. Also, the air traffic control system needs more staff and major equipment upgrades to handle this volume.
"Cutting flights in half" would not have allowed this plane to land safely.
Hard landing with crosswind correction.