The reason could be that WoS has nothing todo with Lightning or with bitcoin spirit at all. It’s a single point of failure database and should avoid the app when onboard people.

If people become aware of the risks using a custodial solution on there own then feel free to use it.

But we as Bitcoiners who already know all the risks should avoid this solutions when onboarding people.

For me onboard people with WoS feels horrible wrong. 😅