It's just *one* replayer bug fix to make the 128kB sample support complete. All other 128kB sample bugs were fixed in the PT code (non-replayer bugs), so why not fix the replayer bug so that you can actually use loop points above 64kB on big samples? It's about time to get it fixed. It seems pointless to have 128kB sample support when you can't use loop points >64kB.
The PT format might have been around for over 20 years and is a "standard", but in fact it isn't. PT3.x changed the replayer behavior on more than three things (9xx, sample swap, 128kB support fix), so it's already a nonsense format that depends on what tracker you use.