They have the physical infrastructure to do so, but you've missed this part of article you linked:
> In order to get all those certificates replaced, we need an efficient and automated way to notify ACME clients that they should perform early renewal. Normally ACME clients renew their certificates when one third of their lifetime is remaining, and don’t contact our servers otherwise. We published a draft extension to ACME last year that describes a way for clients to regularly poll ACME servers to find out about early-renewal events. We plan to polish up that draft, implement, and collaborate with clients and large integrators to get it implemented on the client side.
Running certbot daily will currently do nothing. It won't think that the certificate needs to be replaced since it has not yet reached the limit required to renew.
> In order to get all those certificates replaced, we need an efficient and automated way to notify ACME clients that they should perform early renewal. Normally ACME clients renew their certificates when one third of their lifetime is remaining, and don’t contact our servers otherwise. We published a draft extension to ACME last year that describes a way for clients to regularly poll ACME servers to find out about early-renewal events. We plan to polish up that draft, implement, and collaborate with clients and large integrators to get it implemented on the client side.
Running certbot daily will currently do nothing. It won't think that the certificate needs to be replaced since it has not yet reached the limit required to renew.