what is a sde2/3 now???

I just joined a pbc last week as an sde1. This week saw one girl joining as sde2 in my team. I have 1.5 yoe as fte she has 1.2 yoe with 1 yr of internship experience. While internship exp was discarded in my case but even including that you need 3yoe for sde2 in my org. Have I been handled a bad deal from the hr? I was laidoff before so ig yes. Anyways, i also saw recently a girl joining google sde3 on twitter. When she is a 23 btech passout. How is that possible? you need good yoe under your belt before becoming sde3?? Idk if its a diversity hiring thing or not. Or maybe this girl was just some fake account driving impressions. But seeing a lot of folks without enough experience or skills sitting at senior roles in tech. Is it common now?