Thank you for the answers. Let me go over in reply.
In this regard, when we consider there being people that have a, say, severe base disadvantage due to normally uncontrollable circumstances, I am of the opinion that it'd be relatively fine to let them use what they need to as far as to simply remove that disadvantage. Even the playing field to say. I'd put that specific situation to be outside the scope of what anyone could call even anything close to cheating. I'd say an application of common sense and comprehension of what could make something fairer for someone with a determinate problem or have it fixed.
I've read that one of the varied functions that ACT can have is the ability to add sound callouts and stuff. I think that possible function is one of the things that draw a large part of that hate. We can argue that having something automatically telling you the next mechanic callout at the time or right before it even starts is a significantly large advantage.
For DPS meters, it's simply people not having to just...go extremely dumb about it honestly to be telling people off with how little dps or healing or whatever they do. That's just something you do not do. Can argue that you can have a civilised discussion about it but we all know...this is the internet and it can be anything but civilised when you try to give constructive criticism and advice to a random person.
That's...really fair all in all. To each one their fun as long as it's not disruptive to someone else. Actually disruptive, not an illusive feeling of someone apparently offended that someone else is trying to make their own rotations be as good as they can make them using analysing tools. I don't know, some people can just get pissed about literally anything and everything that anyone else does without affecting them in any bad way.
I do agree with you in this regard that the vast majority just go for these nice little things. The complication comes when there's apparently a potential threat of them being unfairly punished because others have crossed the line one too many times and too much in public.
As sad as it is, we have to admit there'll always be the few people making a loud stand, creating an actual problem for everyone else. Whichever side they stand on.
PS: 3k characters not enough for long segmented reply quotes.