Provide some manner of reasoning for this, or expect to be dismissed completely as just blatantly making things up and claiming they’re the truth. This is absolute nonsense on every level.
I mean, there isn’t much setting the Cleric and Bard apart there, at least until pretty high level. And can an onlooker tell the difference between polymorph and wild shape? Between Lay on Hands and Cure Wounds?
You’ll probably say yes, but there isn’t any rule backing you up.
Only if the player or DM decides that is the case. A cleric’s spell could just as easily be a recitation if holy scripture. Not only that, a prayer literally can be a song, and a song can be a prayer. The idea that they can’t be both is so patently absurd that it’s difficult to even imagine what reasoning could bring one to the conclusion.
Lol what? Nope. That is simply something you are making up. Nothing in the rules actually requires that a prayer is recognizable to onlookers as a PRAYER vs a prayer vs an incantation if some other kind.
Your position seems to be that you prefer class to be distinct in the world, and have run all game input through a confirmation bias filter based on that preference. The rules only support you insofar as we discuss very specific flashy abilities, and assume an expert observer, and then further assume that only someone with that PC class can do that thing in the game world, even though RAW an NPC can have any combination of PC abilities that the DM decides fit the needs of the game.