Meraki finally allowed an operator to stop this a few years ago, but it's still the default.

On Tue, Feb 8, 2022 at 6:34 PM Mike Lewinski via NANOG <nanog@nanog.org> wrote:
Anyone swinging a clue-by-four it going to hit Meraki real hard.

https://community.meraki.com/t5/Switching/Switch-Constantly-Pings-8-8-8-8/m-p/31491