You can control them both.
Controlling transaction size by choosing appropriate address type like Segwit (Bech32) starts with bc1q as well as consolidate your small inputs to reduce transaction size when you need to move your coins.
Choosing a feasible fee rate to use for your transaction (after consolidate your small inputs when mempools give you cheap fee rate for consolidation).
I guess that rational actors in the Bitcoin market are capable of determining the correct time to both consolidate small inputs and split those of large amounts. Rational behavior also implies that the economic value of a transaction will always be larger than the fee paid to transfer it. If a person doesn't understand these simple concepts and still behaves illogically trying to attach value to arbitrary binary data inscribed in a transaction, he also won't consult guides on how to act properly during crises or attacks like we witness today. The problem is rational actors' actions always depend on the actions of irrational actors, which means people reading the guides of input consolidation and learning things have to be inactive as long as economic ignoramuses do stupid things selling and buying scams. Controlling transaction size by choosing appropriate address type like Segwit (Bech32) starts with bc1q as well as consolidate your small inputs to reduce transaction size when you need to move your coins.
Choosing a feasible fee rate to use for your transaction (after consolidate your small inputs when mempools give you cheap fee rate for consolidation).
