Google's post on this topic is here, but they're not pressuring anyone to use their smeared time -- they are just making the public aware of how they're handling the leap second by 'smearing' the additional second over a 20 hour window centered on midnight.

They've also posted about how other organizations are doing their smear: UTC-SLS is using a one thousand second smear before the leap, Bloomberg is using a two thousand second smear after the leap, and Akamai, Microsoft and Akamai are doing a 24-hour smear.

I believe for most consumers of ntp data this smearing is mostly of academic interest. Use whichever time feed is appropriate to you.