That happens a lot. Sparks the team. Hell UT looked tons better when Dooley was fired and Chaney coached the last game. Doesn't mean he should have been hired. It's a terrible hire.
I'm not saying you are right or wrong, let's say you are right. Who is your hire? Considering the total situation.
Desperation was Jacksonville State where the crowd was booing which then lead to Etling replacing Harris and more/less saving the game... this bought Miles/Cameron a few more weeks.
All of sudden when Miles/Cameron are gone everything magically goes back to Tiger football... no more late play calls coming in, penalties magically start to go down, the game flows like old Tiger football. Other than the Florida game, I feel pretty much LSU played near 100% of their capacity except for the Florida game.
Whether Coach O is the medium/long term solution, I agree, he is suspect... he even alludes to this, that he has to prove his worth. The question then is, if not Coach O... then who? The answer is probably there is no homerun hire... so I believe the thinking process is to make the whole coaching staff around him great. Whether it was Les or Cameron, what was going on with the offense at times should not be happening... that is on them. Ensminger was an upgrade to Cameron/Les in every way.
My take is, Coach O is a bunt, plus Aranda/Canada get them to third base... hire a good special teams coach and that gets you home... its not as sexy as a homerun but its still worth a run.
People want sexy hires, Coach O isn't... he looks horrible in a two piece. I look at Coach O as kind of a Miles v2.0, manager of the team. The problem with Miles is he is stubborn, which is a pro and con, but he refused to adjust.... it was time for Les to leave.