This may be a new attack tactic. By flooding the TX pool with large transactions they are trying to artificially jack up TX costs since the spam attack did not work.
As usual Monero will learn from this and improve. 👍 It is best to go through all this while Monero is still not a top world currency.
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Doubt it, they will just go all KYC and wait for bags to pump. The people still in BTC do not care about self-custody.