Legitimate question: Was Sona's heal nerfed because of item changes?

(Stop downvoting I'm asking an actual honest question I would like an answer to)

I'm trying to understand why the heal was hit so hard (taking off 30 base and the %missing is actually pretty heavy for Sona). Now I see that items like and are getting buffs for supports who heal. (which makes me wonder if Nami and Soraka, maybe even Janna, are going to get nerfs or not)

Spoopy Idol Total Cost: 550 --> 850 Gains another passive: +10% Heal and Shield Power Other stats unchanged Mikael's Crucible Combine Cost: 850 --> 650 Total Cost: 2300 --> 2400 (Due to Forbidden Idol cost increase) Heal / Shield Power : 0% --> 15% Other stats unchanged Ardent Censer Combine Cost: 800 --> 700 Total Cost: 2200 --> 2400 (Due to Forbidden Idol cost increase) Heal / Shield Power : 0% --> 15% MP Regen : 100% --> 50% Ability Power : 40 --> 60 Other stats unchanged

So was this completely intentional to make her more traditional builds of items like these to work better? See, now, if you had actually tied these two together in the same update, the context would make sense.

So she'll become a somewhat decent healer if she goes the route of , with windspeaker? and I'm going to be honest and say that does give her more utility. I hate to say it, but that actually works. I didnt want to see AP sona taken away, but I suppose it doesn't hit her too hard, considering the buffs to her Q aura. Sort of null-and-voids my other thread about the changes lol

Edit: apparently the heal was increased??? definitely would like more context on W changes.