It only advertises to people hitting your site with curl or looking at the HTTP headers, so basically sysops guys curious about what your stack is. Actual end users will almost never see it. So what?
We switched to OpenResty lately for our nginx bundle and it changes the nginx Server header to OpenResty, and I cared so little I didn't even bother to put a sed command in our install script to change it. It could say Diet Pepsi Uh Huh It's The One.. who cares? Maybe I'm going to do that with the next update just to make a point. The only reason anybody would even notice is because I told them about it.
FOSS is in serious trouble right now because the funding model is in shambles, and the only way we get anything good funded now is if the megacorps decide to fund something. We need to find better ways for the little guys to put food on their tables, or we're doomed as a community. We tried direct payments to FOSS devs, and that went up in flames. These guys came up with a clever and unintrusive way to advertise (really just to show sponsors, which isn't really even advertising) to tech people, and instead of being supportive of a novel way to fund their project everybody screams bloody murder at them.
If the FOSS community wants to continue to exist as a venue for quality software, the first step it needs to take is to stop chewing its own arms off. Please have a perspective here and understand that these developers are just trying to make a living, just like all of us are. The only thing worse than starving to death making something free for other people is doing it while they sit there and hate you for trying to figure out how to put food on the table. All the quality people will leave FOSS forever, and we'll be stuck with a bunch of random unmaintained garbage and bizarro overengineered UI crap Facebook wants to publish to status compete with Google's bizarro overengineered UI crap, and we'll all be worse off for it.