Attention mongers on LinkedIn these days.

What is happening these days to people on LinkedIn, some are giving shit gyaan on things they have learned from some shit incidents. Some are giving daily gyaan on how would I learn DSA if I had to start again (posting once is okay but once in a week or month, writing same post makes them looks like either they don't know the strategy or there is no strategy), personally I have stopped following these people on LinkedIn, their posts on LinkedIn about DSA and lld makes me feel like I have wasted my whole college and school life. I don't understand how could these guys working in FAANG write 3-4 long posts about cranking FAANG and studying DSA and LLD, how do they even get ime to do research and post. The list could go on and on...