RS3 still really makes more cash than OSRS. Without RS3 Jagex loses a lot of revenue and has to make it up somewhere or it simply collapses.
Then you're like me, and we'll ignore it like we've been ignoring RS3 for ages. No need to fire the game if Jagex gave us exactly what we wanted, which was OSRS.
That's the entire point of user reviews, to let prospective players are aware that the moment an alternative popped up, you jumped ship because the product is crap. Review bombing is bad, but so is avoiding some negative reviews.
MMOs are ever-changing beasts rather than playing for a couple of years really can put you out of the loop. On top of the fact that, there were always choices to rs3. If you love OSRS and had to wait patiently for it to come out to leave rs3, then you probably enjoy rs3 also, even in the event that you hate some aspects of it. Simply leave it alone. Leave the warnings to individuals who currently play with it.
I really don't think he's saying not to leave valid criticism. He's asking people who play osrs only (I stopped runescape years ago and did not arrive back before osrs published on mobile so I never played with rs3) not to fire the review board simply because it's a favorite to hate on RS3.
I read a few more of OPs opinions and he does seem to imply that you should, for the good of the match, nevertheless not leave a negative inspection. I disagree with that sentiment but still think that we should avoid flooding the reviews unless you have played have a legit grievance.
Idk me was a couple of levels off of max on there, or well at least was until archaeology, did quite a bit of PvM, and attempted producing an alt on there lately. . That was a terrible experience ( https://gameserrors.com/osrs-and-runescape-are-coming-to-steam-soon/) I definitely played this game long enough to leave a bad review. I am not saying that's what you're saying by the way just saying it to state why.