I feel like Sona's been left in the dust
Mainly because of the change to Manaflow Band. This is the first time ever that we don't have access to a mana regen option from runes or masteries in the laning phase. Every past season there were options from both runes and masteries for mana regen. In Runes reforged we had Manaflow Band but now it doesn't provide mana regen in the laning phase anymore. Nothing does.
It's really weird that for 7 seasons we always had these options and now in season 8 the narrative is being pushed that we have too much mana regen. It's never been worse tbh. But whatever this is about Sona. I can deal with the changes on pretty much every other mana user I play.
The problem with Sona is she is too squishy to survive lane without spamming her W. She just goes OOM now. You have to max out Manaflow Band, but before you do that you will most likely lose lane. She doesn't feel worthwhile to play anymore because of this.