It's cheap lifetime vps that are probably hugely under-utilized, seems like a spark of genius to spin them down if unused. Interesting redefining of the word "terminate" there though, way to be dramatic.
Well let's think about this rationally.
Say I order a VOIP line and pay for a year. Then 3 months in I decide to make a call. No dialtone, call won't go through, etc. I then have to go to support and determine this inactivity thing booted me. Did they render the services under the agreement in place at the time I bought?
I'd call that terminating my active services as they kill / close / etc. the active container and this is the default setting.
Big picture, wait and see if this "feature" shows up now or ever in any of their pre-sales literature. I doubt it will. It's a scam to maximize oversold ratio.
I know some will say, but yo' fault fo' missin' da email. Yeah, right real businesses don't slide stuff in randomly via email. Tech companies recent decade though are notoriously scammy like that.
More interesting is I bought one to test start of this year. Went to check it, and it wasn't running. So whether or not they've been doing this, meh. Certainly haven't been restarting stuff post fails/reboots/etc. which is moderately unappealing to me.