I mean, it's valid, if you're consistent. I don't think it's the way anyone else uses the word, but that is one way to define it.
No, my point is that it’s a meaningless statement in this post and that it diminishes the apparent significance of the rest of the post.
Because whether or not they “love open source” has no bearing on rationally deciding whether or not they should release one of their products as open source.
The only function of that statement as far as I can tell is to ingratiate themselves to the reader, i.e. “we’re on your team!” That type of desperate signaling communicates a lack of confidence in their rationalization, which in turn makes it seem disingenuous.
From where I stand, they did contribute to opensource and they are opensourcing their other software, Mapperly. That looks like "bearing" to me.