"Won't somebody think of the kids?!" while they admit to using the data to squeeze more money from ads (translated making your experience better). They don't deserve the communities they have anymore.
Soon any company you interact with will have enough information to ruin your life because there's always a way for some employee to get the data even of you really do what you promise and don't save anything.
As GLaDOS said - it's been fun, don't come back.
Doing these things is not easy and they take a lot of time and effort. But from a short look at the article it seems that there were issues with expectations:
Like what do you expect when using an ODF first tool for OpenXML (Microsoft Office) documents? Euro-Office would be a better fit, from my ONLYOFFICE experience. It's not perfect but it's the more drop-in solution for their use case. It's sad that this has come to an end because of what a good, experienced Linux user could tell them even before they began.