I want to say that it's good only because it's giving the cryptocurrency world more and more people and that's giving us hype. Hype is all what we need. ICOs are being hyped on social media a lot and that's making people who are not into cryptocurrencies end up engaging to it.
I have to mention the fact that ICOs coming up more frequently is inevitable. This "frequent" of yours is nothing compared to how much ICOs there will be in the future. On the Internet, things are consumed almost immediately. ICOs are forgotten right after the developers and the early investors have made money from it. They create new ICOs and hope that they would be able to accumulate more funds and be able to sell right away. And since a lot of ICOs are coming, it's not that questionable that there would be a lot of scams going on. Where there's money, there will be scammers.