I would rather see a diver lay out his plan, considerations and experience looking for second opinions than arrogantly head off without a consultation. The OP did not ask for permission to go solo rather if anyone saw gaps in his planning.
People have many sorts of decision making styles ranging from autonomy to collaborative.
He ended a long post with "What I'm curious of though is what your guys' opinion is on this." That makes the entire concept the antecedent of "this." He's looking for validation.
It's not about arrogance, knowing everything, or decision making styles, and I never said anything about getting other opinions, per se.
It's about the choice of advice and the venue. When he first got into diving, did he post here a list of equipment he'd acquired, books he'd read, and a plan to go diving, and ask for approval? No, he obtained valid training IN PERSON. There is similar training available for solo diving. No, I'm not saying that's the ONLY path.
However, when it comes to being ready for solo diving, the opinion of a bunch of faceless usernames on the net, based only on his written description of the situation, is worth less than he paid for it. Have any of the respondents SEEN him in the water? It's irresponsible, and the height of arrogance to endorse a first solo dive without putting eyes on the diver's poise and technique in the water. If he can't get the validation he seeks from someone whose had the chance to assess his readiness from first hand observation, then he's not ready.
I've never seen anyone here endorse doing a "trust me" dive. He's just asked everyone here to perform a "trust me" evaluation of his readiness for solo diving.