[tor-relays] how important is configuring DNSSEC root trust anchor for 'unbound' running on an exit node?

Is it important to configure the DNSSEC trust-anchor for an instance of 'unbound' running on an exit node? I put a lot of work into setting up a new exit and want to take a break, but just noticed this item. 'unbound' was built from source rather than installed from a distribution, so this step must be performed manually. The relay resides in the high-quality German LeaseWeb network and the risk of DNS mischief appears low.