I just received a D2C carbon frame. You can see in the pics there is some 'fraying' not sure what to call it, from where the bottle and front derailleur bolts came through. Everywhere else is very clean. I asked the Google AI some questions and it says this isn't something to be concerned about so long as:
Loose Rivnuts: If the threaded insert (rivnut) for the bottle cage spins or feels loose, it can wear through the carbon over time. (they are solid, no spinning etc)
Soft Spots: Press on the area around the bolts. If the carbon feels soft or "mushy," it may indicate internal delamination (layers separating). (there are no soft or mushy areas)
Expanding Cracks: Use a "tap test" with a coin. A sharp "tink" is good; a dull "thud" around the hole suggests deeper internal damage. (it all sounds the same)
Hoping to get some confirmation from you folks. Sorry if this breaks rule 4. Thanks.