The advice is fair, but, I do want to argue a little bit on the point of valid reports;
- Reports do not actually slow your honor progress.
All a report indicates is that you are much less likely to get honored that game. Basically the system is naturally slow at gaining honor for the lower levels, but when people post on here saying that "reports that are valid but not severe enough to result in punishment"- what they really mean is that you are probably not getting honored in these games that you are being reported. Basically reports do not directly impact your honor progress, riot uses reports as an indication of how often you are being honored.
I'm not really one to call into question what Riot says (it's their systems after all, they know it better than we do), but, this sounds like it's running counter to what we know from what Rioters have stated on the boards.
For example, Riot dArtagnan commented on a post about eight months ago explaining that negative behavior can slow your honor progress, or throw it in reverse.
It doesn't take an 'insane' amount of time to go from Level 0 to 1. if you still aren't climbing, the only thing holding you back would be by your own behavior. If the system notices negative behavior on your account, you will either lose honor points, or not gain any new points to advancement. So if you really want to climb, the best thing to do is just focus on your own play, support your teammates, and don't say anything that can be taken as negative in chat. If so, you should be able to climb no problem!
Hopefully that clarifies things a bit! Let me know if you have any further questions!
Which I also brought up in a comment string in this post, inquiring about whether reports affect your Honor progress or not. Even Riot Tantram backed the explanation, so that means there has to be a fair amount of truth to it, right?
As far as I know, getting reported in and of itself has no impact on one's Honor progress. Only when the reports are flagged as valid (regardless of whether or not they lead to a punishment) does it have an effect.
So, as long as you're doing nothing wrong, you don't have to worry about reports damaging your Honor progress.
And, just as one last example, there's Riot Tantram pointing out that negative behavior will slow/halt Honor progress, while neutral/positive behavior won't.
I looked at your account, and you have a lot of unsportsmanlike games that just weren't severe enough to warrant a penalty. You actually have to be sportsmanlike .. or at the very least not unsportsmanlike, to progress through the system.
One pattern I noticed is that you constantly harass people on your team with negative scores, and accuse them of 'initing'. It's a pretty consistent behavior.
So, all said, I'm not sure if I trust the thought of reports being an indicator of less honors - reports and honors aren't mutually exclusive, after all, and it is wholly possible to be honored (even outside of a premade) and still be reported. Of course, this is coming from having seen only the one side (valid reports slowing Honor) for months, and only just now seeing the other (reports being a measurement against Honor) - but even then, the argument I know kind of just makes more sense.
Whatever the case, I can at least get behind the advice. Especially since playing Normals or non-competitive modes is a two-fold kind of help, since you'll be more inclined to relax in them than get worked up.