I caught a race recently on TV and the "engine noise" is horrible https://www.youtube.com/watch?v=h1ovY8oSjDY Watching 20 cars together making this high pitch sound is more like a punishment than something enjoyable
That said, there's people who complain about F1 cars not sounding the same any more like they did back in the early 2000s (with the classic V10 engine), so even if the FE cars get modified in some way to change what they sound like there might be people complaining. Would be funny if for broadcast they replaced the FE sound with '60s V12 sounds, though.