Obviously, based on the rest of your post. But "I can create whatever bovine crap I want, therefore you're wrong" is not exactly a sound argument
Not really. The game is clear that verbal components are distinct from normal speech. And if you don't know the rules, you're in no position to discuss them.Turn Undead requires the cleric uttering a censorious prayer and presenting their holy symbol.
This looks an awful lot like casting a spell, to someone that in game does not have a magical education, and out game to someone that does not know the rules.
No, it can't.Guiding Bolt has a Verbal and Somatic component, which a Spellcasting Focus can replace, which in this case is the same holy symbol.
You can customize the cosmetic effect of the spell. You are explicitly NOT allowed to make the spell look like something else.The Tasha optional rules allows players to reskin things.
If these optional rules are allowed, by RAW a PC could use the same prayer and presentation of Holy Symbol for Turn Undead as a Guidance Spell.
And I don't care about your homebrew. Not sorry.So no, I reject your preposterously limited view. Sorry.