As said before I am not very interested not experienced on the cheating topic - I just never believed "miracles" and just accused all who were significantly better than me :D
But my idea about this support board would be that if there are some helpful tools that are fee + not getting you banned at least right away, say usable for at least a season, that would be good info to have and give so-called "pros" run for the money. People who usually get into platinum and above fairly easily could just use those for a while and see how fast they can progress into the next tiers and how competitive or non-competitive they would be there.
Sure there will always be "kids" and fanboys who will:
A) use cheats
B) support (blindly) cheaters and non-cheaters alike
but that's not the part we should be worried about given in many cases those kids would still mainly remain at <gold level.
E.g. now with season 9 I am struggling so much getting out of the pool because some level 30-50 kid one-mags me every second game or I am getting matched with 2 people/friend nub team who don't teamwork and get me into fast 1 vs 3 for the majority of game. Maybe I am becoming worse but season 8 was much easier and I almost reached plat 2 (my highest so far).
Yet after gold level, I feel that those kids even with cheats can't beat 3 well thinking and playing teams which probably pisses them off and they create new accounts or start to cheat so bluntly that they (hopefully) get banned much more frequently.
To sum up, my vision of this experiment would be to see how "legit" platinum and above level players with say macros stack vs guys who are usually in pred level. Of course, fanboys would still say "hey those platinum guys are clearly using macros given their support board, etc." at the same time it would definitely affect pros as there would be much less content to show off assuming now they would not have those crazy 2,3,4 K games with 10+ kills even on highest levels.
p.s. for a person who uses their brains it is fairly easy to say who is up to no good actually without watching any gameplay footage e.g. one day I bumped into one very popular streamer who organized some sort of a fan vote participation in a competition (fans who have subs forced his team to play certain legends) and the dude with his teammates in a live stream already discussed the next "challenges". And then a phrase comes up "sure I am up for it, I earned more than in my previous cup win". I am amazed how those subs/fanboys still watch that * after that when a person clearly states that he/she will do whatever for that sum of money and surely I would too given figures were in the 25k per month zone.