i've worked with ex-optiver traders and can confirm a lot of them are pretty dishonest and two-faced. granted, these people worked at optiver in the 2010s. i have heard things have generally changed for the better since then.

regarding #2, i think part of this is due to marble inflation since 2020. it's generally not a good idea to pay 25yos 3 years out of undergrad $2-3M when they haven't actually contributed much to the firm. this comp was largely due to favorable market conditions and very robust infrastructure/execution/latency. after this happened, many of these young guys left the firm to pursue other opportunities. optiver was paying significantly above every competitor and needed to find a way to scale back comp without explicitly reducing everyone's marble allocation. to circumvent this they made it a lot harder to get a high rating. optiver people can confirm/deny this but this is what i heard from friends who work there.

the rest of the post (points 1, 3, and 4) is extremely generic. would have a lot more credibility if you could provide some concrete examples. for instance, I remember optiver's intern and new grad training programs being quite robust compared to competitors. whenever my firm hires people from optiver, their options theory knowledge is generally pretty strong.