It's another thing for you to put a banner inside my computer, on the software I use to manage my own data: that ought to be a tool I use for my own purposes, and not a place for you to do what you want.
A tool which starts acting as an agent for its developers, not as an agent for me, is not a tool I want to continue using.
If you trust the makers of LibreOffice enough to run their software on your machine, you might also consider trusting them on this decision. Unless of course you know better than them about what it needs to keep the software alive, in which case you might wanna give them a hint (e.g. by detailing how you would imagine it would work instead in terms of finances).
If you trust the makers of LibreOffice enough to run their software on your machine, you might also want trust them on this decision. Unless of course you know better than them about what it needs to keep the software alive you run regularly.
I think it makes sense, how else are they supposed to fundraise and develop the features that makes the software useful to manage your own data?