These are all valid thoughts, but the simple fact is that not all of those back tees will be used, at least I don't think so...
During practice rounds on Tuesday and Wednesday, most players were also hitting practice shots from forward positions on 9 and 17. So this may be much ado about nothing.
Personally, I am no fan of the extreme length on 9 and 17; 17 in particular. (9 is a very, very tough green for sure but at least it is designed to hold long shots.) On 13, I think the real defense to that hole ought to be hole placement, not tee length. I think the new tee at 13 was unneccessary.
Nobody has mentioned 3. Nothing much has been done to 3, and it offers a birdie chance for a well-struck shot, or else a heroic putt. The 3rd hole generally quarters into the prevailing wind, so it is important to take that into considration.
But still, I don't understand any serious fear-mongering. OHCC and the PGA have lots of forward tee options on 9 and 17. Shame on them, and not the golf course, if they misplace the tees.