Oh I forgot about the amount privacy "leak". Every wallet defaults to automatic fee selection which is uniform and can't be fingerprinted. Many wallets don't even let you pick fee tiers. Fingerprinting on fees just makes your UTXO more unique and is an extremely weak heuristic to gain any information unless another piece of information is known.

Basically on chain you'll have one transaction with a different fee, but it still has 16 unknown inputs, hidden amount, and an output hash that's impossible to link to a sub address on-chain. Hardly a "leak".