Because those are not attempting anything too new. Discovery attempted new and now is a pariah for it.
Eh, kind of. To use the albatross allegory, an albatross is good luck for seagoing vessels until it's killed. That's where it becomes an albatross, or anchor, around the necks of the crew and starts their descent into bad luck. Lower Decks, Prodigy, et. al., they're using the show canon to make something a little newer, fresher, maybe, while sticking with the general formula. Tried and true success.
What Discovery is doing is taking that canon to get people into the show, but they've shot the albatross, and now they're in unknown waters, but still sticking to the old Trek tropes in the process, so that albatross is still around their necks, and likely will be for the series run. I don't like what they're doing, but then DSC has been hit or miss for me from the start. Sometimes it's really good, and sometimes it's really bad, and I guess it comes down to how much one has invested in the characters whether or not the bad is forgiven more easily.
At the end of the day, it's just subjective taste. I have friends who adore ENT, and I don't. I like some of the episodes, but it's not my show by any stretch, but most of them don't assume I have ill intentions towards the show because of that dislike.
It's okay to like things while others don't, and okay to dislike things when others like them. That doesn't mean people are dismissing it because they're wrong, it's just the show not connecting with them. That's all.