I have the same flight stats and I have only had to ask for a refund once because it straight up didn’t work for most of the flight. Many airlines have very usable internet now, some even for free (jetBlue).
This article from 2017 confirms that it was 15 Mbps at one time: https://www.latimes.com/business/la-fi-travel-briefcase-airl...
It looks like they have since reduced the free tier to less than 1 Mbps and added a paid option that allows you to stream video.
On the return flight it just didn't even work. Fortunately, I'd had newpipe download some content before we left.