the glorification of this person is not acceptable for me

Why did you click on this post then?

but I can’t grasp the collective hate the last days

How many people died early because their insurance claims were denied and they could not access life saving medical care?

How many people lost relatives who were screwed by this evil company?

How many people were forced to live with debilitating conditions because insurance decided not to cover a procedure that would significantly improve their lives?

How many people were bankrupted after getting emergency care only to find out the claim was denied and they're on the hook for the ridiculously inflated cost that the hospital charged them? (If you don't know: Hospitals in the US charge orders of magnitudes more for medical treatment than the treatment actually cost, because insurance companies will only pay a fraction of what they're quoted, but if you don't have insurance and/or you're denied coverage, you're actually on the hook for the entire amount because you alone have no negotiating power.)

How many were exploited for that CEO's profit? How many more have to be?

He caused real, material harm to millions of people. His victims shed no tears for him and understandably feel vindicated.

Imagine you give your hard earned money to an insurance company every month of your life, and they promise to have your back should you need medical care, but the one time you need them to do the one thing you've been paying them for and they've been promising you, they decide to just not do that and tell you to go fuck yourself, you'll probably harbour some hatred toward their leadership.

A medical insurance company behaving like this is on a whole other level of scummy than most types of corporate price gouging out there. This isn't just charging too much money for a subpar product, it left millions of people with worse than nothing in times where they were the most vulrnable. If they had no insurance plan and just put the monthly payments in a box as an emergency fund, they would at least have had that money to pay for the medical procedures they needed. Instead this company took that money and gave them a middle finger when they desperately needed it back. Its sole function for millions of people was to be a parasite that stole their savings with the empty promise of helping them should they fall ill. This backstabing vile scum preyed on the human desire for a safety net and refused to give them that safety net when the time came. Then it proceeded to gaslight them, telling them that they didn't need what they were begging for. It sent sick and dying people on a wild goose chase of appeals to ultimately deny them all the same.

That's the reason for the collective hate.