Google Cloud provides more than just VMs and Containers. It has a bunch of services backed in, from a variety of databases such as Firebase (that have powerful built in subscription and eventing systems) to fully baked in Auth, (Google will even handle doing two factor for you!) to assisting with certain types of machine learning.
Vultr looks like they provide more traditional services with a few extra niceties on top.
Within Google's infrastructure, I can deploy a new HTTPS REST endpoint with a .js file and 1 console command.
Could I set up an ecosystem on a Vultr VM to do the same? Sure, it isn't magic. But GCP's entire value prop is that they've already done a lot of that work for you, and as someone running a startup, I was able to go from "I have this idea" to "I have this REST endpoint" in couple of days, without worrying about managing infrastructure.
That said, articles like this always worry me. I've never seen an article that says "Wow Google's support team really helped out!"