I'd say so, all the funds were available onchain afterwards.

I chose to send out all available balance, and the node made a transaction with all the utxos with 2 outputs + change, one to the address I chose and another one with 25k sats to an address controlled by the lightning node.

Update: tried again today and the transaction went through.

Even though the channels were showing as closed in RTL and the transactions were confirmed onchain, in core lightning GUI it showed I had 3 channels still open, today the core lightning GUI no longer showed any open channels and the transaction went through.