Even if 0x4... is also a meta address, and you send the USDC to three different stealth addresses derived from the meta 0x4... instead of to 0x4..., the three t

Even if 0x4... is also a meta address, and you send the USDC to three different stealth addresses derived from the meta 0x4... instead of to 0x4..., the three transactions could be linked to you by observing the timing of the first and second batch, and noticing they were all sent together both times. But still, it's definitely better than the current horrible status quo, where users don't have even the most rudimentary protection against having their privacy compromised.