The ARC observation prompted me to share a True story:
I once knew a guy locally who was a big cable hater. He was a custom installer, home theater stuff, and mostly Sonos. He would always say cables are useless, every single time he got the chance, very loudly. He still does the same, in all Facebook groups he is part of, and in local gatherings, to get business ala Audioholics style.
One day I bought something from him, and went to his house to pick it up (he did not have a retail store). I noticed some very thick, awesome looking speaker cables he had his floor standing speakers connected with. So I asked him something like “what’s up with these?”. He said... Oh... a customer gave them to him for free, and he was only using them because they looked good. Then he went on to “explain” why speaker cables don’t matter, blah, blah, blah. 😂😂🙄🙄
I’d just thought I’d share.