I'm interested in trying this. ABSL isn't "super annoying" but I would appreciate not having it.ASBL can only be disabled with the service menu using either the service remote you can get off eBay or by using an Android phone with a IR blaster and a suitable app. There are a few in the Google Play store. I have not yet tried any so I don't know how well they work.
For PC use it might be worth turning off ASBL, even if it means diminishing the lifetime of the display a little. This is not an issue if you are just gaming or watching movies but if you use this display for everything then you might notice it.
The cheapest option appears to be Ebay, for the MKJ39170828 remote for £6. However, having Google-d this I can't find definitive success cases of attempting it with the CX. Should I try it?