It's not totally true because we can see a lot of projects which is listed on Bscscan as a rug pull project. But we can say that every projects with solid ideas become quite successful because of chosing BSC as their first priority and every yield farmers won't be able to pay higher transection fees for small rewards as everyone isn't whale at all. So, projects which is running on BSC, are quite successful because of lower transection fees and everyone can participate on those.
Every ecosystem includes both potential projects and scam projects, so users and investors need to be careful when participating. Investors can refer to specialized fundamental analysis groups to learn about the project's solution, tokenomics, investors and team, from which to make an assessment of the future of the token. I often use a simpler way: for me, projects in IEO, Launchpool, Launchpad on Binance often have the potential to become gems in the BNB chain ecosystem because they have all been carefully evaluated by Binance and funded by Binance Labs and many other large funds in the market.