AP utility scaling on supports has become almost pointless
A loooong time ago, like way back in patch 3.14, supports like Nami and Janna (I focus on these as they're my main two supports) had changes made to their kits, to give them utility scaling with AP on their abilities. As I recall, it was partially to address some of the supports being too strong in solo lanes (they shifted some scaling off damage an onto utility), while still making the support items of the day feel like the provided something meaningful for those champions' kits. Though this also came with a nerf to the base utility on those spells, under the assumption that the supports would naturally pick up enough AP along the way to scale the utility to where it was equal, or even stronger, than it had been before.
This was fine back then, because support items weren't as specialized as they are today. And those that existed tended to have some AP tacked on them here and there. It wasn't too difficult to get the support items you wanted/needed and grab enough AP to meaningfully scale up your utility, as well as having your abilities sting just a bit more.
But let's look at where we are today. Since the shiny new support items came out with this season, a lot of access to AP for supports has disappeared. Looking at the builds for Janna and Nami on champion.gg, they might pick up just a single item with any AP on it, if any at all. And that's often not until later in the game. The core build is based entirely off the new % healing/shielding stat, which further scales the actives for both Redemption and Locket.
I'm not trying to say the build is bad, or that Janna and Nami aren't in a good place. What bothers me is that the build is largely there to scale off itself, plus the shields/heals these two champions have, while not allowing them to take advantage of any of the actual scaling in their kits (for both damage and utility). Does the build feel strong? Yes. Do I feel like the build is enhancing everything my champion has to offer with their kit? Hardly. If I go with the new build, I definitely notice that my utility (particularly the slows and allied MS buffs) is weaker than it was when I could pick up a fair amount of AP with the support items.
is fine to them