These days, most people's experience at a big tech company is a political dystopia where everyone is optimizing for their promo packet.
That's going to get you 2 different audiences.
Yes, big corps suck. Always have, always existed, 20 and 40 years ago. Startups of 20 years ago have become big corps of today; now, new ones are in this "youthuful vigor" stage.
The current boom in AI and the cloud/social media boom in the recent decade have required ungodly amounts of capital for their resident companies to get off the ground. It's no longer a creative endeavour that basement hackers can participate in. In many ways it is toxic to the original nerd/hacker ethos by shutting out newcomers to the field and increasing wealth inequality, hence the hostility you now see on HN.
The good vibes and optimism have left the industry.