Logs filling with entry at INFO level

Customer states that log files are filling with entries as shown below.

Would it be more appropriate for these messages to be logged at DEBUG level?

> 2019-09-28 14:30:48.589 INFO  [kea-dhcp4.flex-id/12307]
> FLEX_ID_EXPRESSION_EVALUATED Expression evaluated for packet to
> "xxxxxxxxxxx:internet" (size: 18)
> 2019-09-28 14:30:48.605 INFO  [kea-dhcp4.leases/12307]
> DHCP4_LEASE_ALLOC [hwtype=1 xx:xx:xx:xx:xx:xx],
> cid=[ [[[...]]] ],
> tid=0xxxxxxxxx: lease n.n.n.n has been allocated