Dude there is a big difference between not investing and starting a fucking crusade.
Every big IPO on the stock market is a scam (why else would the current owners (insiders) sell? And don't say capital because every large business can loan the money quite cheaply). Do you see me posting this on every forum? No, I just don't buy IPOs.
Liquidity. Especially during the growth phase. Last time I check you can't eat a share certificate.
Added some emphasis. IPO-ing for a fair price as an established company is stupid as you can loan cheaply instead of selling equity. IPO-ing when the market highly overvalues the business however is great