You can make the outputs 0.
Not only that. You can also hide your scripts behind a TapScript, and then spend by key, if your TapScript will turn out to be unspendable or expensive.
Great idea, we will also added support for key paths in the next version!
In the meantime, for development purposes it shouldn't be an issue if you are using the docker image with bundled regtest + explorer and use Fund via RPC (regtest btc is free

), as clicking the button first runs generatetoaddress to mine 50 btc to the default wallet, and then transfers 1 BTC to the P2TR address (see screenshot below).
