why not? True be told, 99% of the time really only matters if the track you run at has that setting work 100% of the time. If it doesn't, 99% really doesn't help you at all.
And besides, as a race vehicle, having the ability to adjust things like that should be expected and I personally am surprised considered AE did nice inserts on the RC8 for a variety of things that they didn't do anything like that on the SC104x4.
And personally I like something alloy back there holding it all together like the front. Not saying the stock rear is not durable, etc. Just after having the *joys* of the T4 front end coming apart at the plastic hingepin brace (which ironically was metal back in the day of the T3 out of the box), its a bad taste you want to not experience again. But, so far so good, Sc104x4 has been durable.
And RC Shox stuff has been money on the track I run at.