Nope, there could be 101 reasons for just that - including non-Apple software/daemons and launch agents.
So, with a clean install of High Sierra on my late 2013 Retina MacBook Pro - I need to do what exactly?
I don't care what techie crap you guys throw at me - it's a machine made by Apple running an OS made by Apple. If you care to make up an additional 100 reasons, how very creative of you?
I don't need to report any bugs or run an etchasketch.
I just install Apple's OS on Apple's Machine and report that there's suddenly an additional 30 second delay on startup. I'm quite certain Apple is well aware of the issue.
Then, if you like, you can run your etchasketch to prove that Apple has put forth a solid OS, rather than pushing out a beta for you to test.
I'm very happy you're willing to test it out for them. I decided that - due to the weird unexplained startup delay - I wouldn't bother continuing to test out their software for them. Especially given they're introducing a whole new proprietary file system.
But hey - it's probably all due to Matt Daemon starting up my Mac with an etch-a-sketch.
But please, continue contending that it's my fault for running Apple's OS on the machine made by Apple? I feel just horrible about my incessant whining.
So, what next? Or am I better off just animating an emoji with my face?
That's where Apple sinks its billion dollar resources these days, right?
And - oh - Sierra runs fine, thank you. No complaints on that front.
I'd be happy to just stick with it if I could continue getting my security updates? Or will Apple just decide that High Sierra is the last pOS my 2013 is allowed to run?
Oh, dear whiny ol' me...