DISCO was an unnecessary prequel. Let me be clear that I'm not saying DISCO is without merit. I like the series though I wish it hadn't made the unforced errors it did right out the starting gate, and a lot of that came from making the series a prequel. I agree with those who feel that DISCO's premise didn't necessitate for the series to be a prequel. If it had been set after Nemesis, I think it might have been better received overall, even from a number of it's detractors right now.
ENT honored the prequel concept better, especially in DISCO's first season. I get the strong attraction of nostalgia, but that's the issue with a lot of these reboots, sidequels, or what have you. Its like they want the glow of nostalgia but then don't want to fully embrace that nostalgia. And I get it, they want and need space to create and add their own touch to things and not feel burdened by trying to cross every 't' and dot every 'i' to make their series fit with TOS or whatever established franchise. Also, it's less risk averse to do a prequel and the Abrams-Lin films proved there was still some interest in the TOS era.
All that being said, from a creative standpoint, of having a Trek series truly for this era, I wish they had set DISCO after Nemesis. Almost nothing major in the series would've even needed to be changed. The main sticking point would be Burnham being Sarek's daughter and Spock's sister. Though depending on when you set the series, Michael could've still been in his adopted daughter, it would've just been the older Sarek. Or she could've been Tuvok's adopted daughter.
Making DISCO a prequel was the easy route. They decided to swaddled themselves in nostalgia, yet make so many changes that it failed to deliver enough on the promised nostalgia.
In some ways Picard is better at being a Trek for today, though for me the writing, story, and tonal changes are too jarring. So even there, I wish they had just made DISCO the series after Nemesis, and perhaps Jean-Luc could've been the special guest star in their season 2 instead of Pike and Spock. Heck, Burnham could've been Sisko and Kassidy's daughter, and that would've more naturally tied her to an established Star Trek hero without it feeling as shoehorned in. In many ways DISCO feels more like a successor to DS9 than a prequel to TOS anyway.