We have plenty of proof that you can build successful large-scale software without synchronization or zoom or in-person meetings.
A successful project that makes use of synchronization doesn't prove that synchronization itself is successful. At best it proves that synchronization may not destroy the craft entirely.
I admit that synchronization may add something to the development of business software, but we have plenty of business software that doesn't use synchronization, like Gitlab, Tailscale, etc.
