There wasn't a pro destroyer thread, it was just a thread like the Boss that's up now - everybody talked about their impression of the disc page after page
I don't recall when it was released, but if you check around that date, it should be fairly simple to find (in the equipment forum).
As for throwing anny... yeah, it doesn't help you at all. You're throwing rhbh, so if you throw anny, your discs just wear into rollers at 2-3 times their normal usage. Out of the box, for a 350' thrower, you should be throwing something in the high 16x range or low 17x range and it should be overstable when thrown flat or you throw it anhyzer and it'll come back. Once it breaks in some, then it's a flat throw, then a hyzer flip to straight, then hyzer flip to straight to turnover, then you can throw it high with hyzer and have it go anny and fade back, then it's a roller. There is so much more life in a disc if you throw it hyzer or flat to start with vs anny.
In addition, you lose a lot of your routes - your shot shaping skill - if you only throw anny. While it's a great shot to lean, the opposite is just as true - being able to throw a long hyzer shot. Being able to throw a flippy disc with hyzer and have it come up flat at the right time is another.
I went through a stage where I thought all the discs I had were too understable, but now that my form has improved, I'm finding out just how stable or overstable discs are. I'm not great by any stretch, but when I can throw a 150g disc for max distance and not have it roll, then I have to believe that somebody turning over 170g+ discs which are more overstable molds are having issues beyond the disc itself. It may not be bad form, but it might not be the best for to get the most from the discs you're throwing, you know?
Watching you throw, if I were you, I'd take a shot at throwing with the best form you can. You appear to have a reasonable grasp of how to throw and the basic mechanics, so I can't imagine it being a long process to get back to the distance you're throwing now. Hopefully, then you'd be looking at a 350'-400' line drive type shot with those sky annies being 450'+.
All your shorter shots would then benefit and, hopefully, your golf game would improve as well. It'll take some time and you'd have some inconsistencies as you beat in the new muscle memories, but it's the kind of thing that could pay off as long as you play disc golf.