Forget whether Americans really want them or not, do people at the stations themselves want these extra newscasts? Especially when stations are already short-staffed and most certainly aren't adding extra bodies for these (both because people don't want to work there and because companies don't want to hire extra labor — it's a two-way street)?
If anything, stations should be dumping newscasts outside of core hours to help give their staff a break. Mornings, noon, 6, and 11pm are all you really need. The 9ams, 3pms, 4pms, 7pms, weekend morning shows of the world can go if you don't have the staff. Not only is it overkill and repetitive, but it's a lot of work when most stations are stretching their staffs thin. If you have to make your people pull double shifts to get both the morning and evening shows on the air, that's a problem. If you have college interns anchoring your weekend morning show because no one else wants to do it, that's a problem.
Although I'll argue that syndication has not been very compelling the past few years and has gotten pretty cliche. It's either "talk show with big name celebrity" or court show. There's no ifs, ands, or buts. These companies really need to do something different.
I'd also love to see a local station do something other than news or pay-for-play, but unfortunately local stations stopped being daring and creative once quirky local individuals sold their stations to hedge funds.
(I will give Graham Media Group credit in San Antonio, KSAT can and has produced a lot of non-news local shows in the past couple of years, mostly for their digital platforms but they'll air it on TV as weekend filler, most notably Texas Eats)