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..
Dont compare it with Bitcoin because during Bitcoin was created there was no ICO and fundraising event.
Thats why it matters now because any projects that need to raise funds via public offerings must be transparent and this will include their "true Identity because they are intended to raise some funds from the public, if the project is not initiating any public offering like ICO IEO, etc, or not intended to raise funds from the public, will thats okay if they remained anonymous. Defi is the perfect example because most of the Defi project team is hiding in the dark thats why they easily have gone with the funds they raise.