There are various kind of old crypto projects that has no team but still they are among the best projects today, I believe this happened because many old projects followed the footstep of Bitcoin, bitcoin would have been in tougher situations if the team or ceo is public I believe but today it's a complete different story or should I say experience? Since the birth of ICO we've seen tons of scam projects that aren't scared of revealing their faces even when they knew they are going to exit scam on investors fund, so for me hidden team members or not still doesn't make a difference..
I have also seen different crypto projects in four years, both with closed teams and open ones. To some extent, you are right that there is no difference in this, the main thing is that there is a result, but on the other hand, when you know the team, then you can understand what kind of people they are and what they are capable of. This makes it possible to learn more about the project and make the right choice. Again, if the project turns out to be fraudulent and the team was open there, that is, to whom to present claims and try to compensate for the losses, and if the team is hidden, then you have lost everything forever.