I'm late to the party and I'm sure that has been talked about, but I'm around a third of the way through the new Phineas and Ferb season. Turns out it's... really really good.
It's not a reboot so much as a sequel where they just time skip to next summer, picking up where they left off. Which is exactly what they do. They seem a little more willing to shake up the formula this time around, but for the most part, they still stick to the script. Not that it's a bad thing. Doof is evil again and if there's an in story reason they haven't explained it. But the show doesn't really work otherwise, so whatever. They actually address a few things that they never followed up on in the original, such as Stacy knowing about Perry's secret identity.
Some of the characters sound surprisingly different despite having the same VAs, even though the actors aren't really at an age where you'd expect major voice changes. Linda and Baljeet stand out, to the point where I had to check if they'd been replaced. Ferb uses his same VA from Candace Against the Universe, which seems to have been a decision by the actor to leave. He's not quite as good as the OG, but he's fine. Pretty much all the others have been retained.
The animation looks a little different in motion. Not bad different, but it takes some getting used to. Stylistically it fits right in with the original.
The inventions are a LITTLE less interesting on average, but I think they do a bit more with the plot... such as it is. At times the atmosphere feels.... a little less wacky, but a lot more surreal. It's hard to explain, and maybe it's just me. Again, it's not bad, just different.
It's not QUITE as good as peak season 4, but easily on the level of late season 2/early season 3. Crazy fun for the whole family. Definitely the best of the recent rash of cartoon reboots. Go watch it.