We at P2P org support this EIP.
We run validators for a broad mix of institutional clients who want to migrate but stay on 0x01 specifically because 0x02 breaks their reward flow, as rewards stop arriving at the withdrawal address on a predictable schedule.
Partial withdrawals have not been a workable substitute for us, for the reasons already listed in the EIP plus one operational one: each request is a signed EL transaction per validator. Where the withdrawal address sits behind a multisig or an internal approval process.
The net effect today is that the network does not get the consolidation. Stake that would happily run at 512 or 1024 ETH per validator stays at 32, because reward delivery matters more to the client than validator count does.
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