Anyone investing in bitcoin is interested in the technology and the idea behind it, if they weren't interested they wouldn't have chosen it. but humans are curious, love to explore and want to know everything, so it's no surprise that many people want to know which great mind created bitcoin.
I think the intrest will even come before any other thing then after having intrest then you can start investing a lot of people don't bother when it comes to investing, the technology is exceptional and it looks pretty okay for people with zero business idea to invest in, has far as you can be patient enough then their is no issue, then you are okay and ready to invest because their is a lot of factor that is discouraging people from investing into bitcoin and that is because they don't have the right knowledge, when they have the right idea then they will be able to do the right thing.
Honestly, we all care about Satoshi's real identity but we understand that if his identity is revealed it would be very dangerous for him or bitcoin. So many people choose to ignore it, pretending not to care because they understand that it will be good for him and good for bitcoin.
Satoshi identity is not somthing that people are suppose to be worrying about because the main thing to focus on is not more than the investment it self but people are curious and I don't know why because, satoshi is not suppose to be their problem, and I love the fact that satoshi is unknown because their would have been a lot of problems by now actually.