60 interviews in 30 days is throwing an entire pot of spaghetti against a wall and not even waiting to figure out if you cooked it right before dumping another pack on the stove and firing back up the burner.
This not a person carefully working towards a thing or getting practice to calibrate. This is a person who has read too many blog posts like this and regrettably and agonizingly thinks the process of finding a job involves interviews in bulk and funnels and a spreadsheet at the end of which pops out some offers that are then mostly weighed based on numbers and one gets accepted.
This process is what way too many people who blog about their job searches do and it is completely unhinged.
And it is also, not what most of the good engineers I know actually do.