ICO should be regulated and it will be so. STO should be a new type of legit ICOs with many legal requirements and maybe it will be as succeed as ICOs in 2017. I'd like this to be so, but the reality could differ a lot from what we want) In total I think that regulation is a positive thing for maturing of the crypto market.
Have you seen STO? and it seems like you have no point about what STO is. STO must registered on the regulators before you can call it a real STO. Latest STO called Bolton coin was being a scam STO. That means there was no a lot of differences in ico or STO.
This is true, but in my opinion scamming with STOs is maybe a little more difficult than with simple ICOs. Anyway, you cannot be sure 100% even with STOs, but since they must first comply with regulations, there is some more guarantee at least.