I understand what Thse Noize is trying to say.
It's just that TheNoize always do "say it in your face" type of attitude might drives people crazy sometimes.(just like Yamaha speakers)
But i surely understand why he was pissing off.
During whole 90's record industrial; the rival between Yamaha and Genelec was already a huge debate.
Yamaha's NS10 is playing a dark character while Genelec 1031a represent a sunshine character.
A great mix will sound great in Genelec , and a bad mix will still sound great in Genelec; however, a great mix will sound ok in Yamaha, a bad mix will sound hell bad in yamaha.
Is Yamaha NS10 an accurate flat frequency response speakers?
HELL NO. However, neither our ears, and rooms.
Human ears are not flat response, we hardly hear anything clear below 50hz and above 12000hz; and, we hear everything very clearly around 1k to 5K hz.
Ironically, the strength of NS10 is the range where human hearing the strongest: the high mid 1k to 5khz.
This is why we often feel discomfort after listen yamaha for long time. Because what yamaha is focusing exactly the range where we are most sensitive.

On the other side, Genelec has totally opposite approach, they roll-off the 2k-4k slidly to decrease that kind of (IN YOUR FACE TALKING JUST LIKE THE-NONISE). So ya, you will always feel comfortable and happy when you listen to Genelec.
HS80M = NS10?
NO. But it is different in a good way.
HS80m is a power monitor with build-in Amplifier.
NS10M is not and requiried a good amplifer to work with.
With NS10, you need to apply the right amount of "power" from ampllifier to get NS10 sounded right, otherwise, NS10 will be doomed due to a wrong amplifier and apply the wrong amount of power.
On the other hand, with HS80m has nothing to worry about the amplifier setup. Since it's already build-in, Yamaha already did all the pre-set up and pre- adjustment for you. All you need to do is to feed a signal (even from an Iphone).
ALSO NS10 is famous for being very breakable. you have to contantly switch the tweeters everyonce awhile (i broke 3 pairs with in a year). As compared, HS80M is much stronger than that.
The low-end frequency has a huge improvement from HS80M to NS10M. NS10M can never ever play anything around 50Hz like HS80M did.
Oh ya but don't forget, HS80M has 4 switches at the rear for you to adjust the tone.
I prefer to use the Mid boost(this will make HS80m even more like NS10 sounding), and high end roll-off switches (so it will be not as crazy brighten as some mentioned) and leave the bass uncut.
What's the common part of HS80m and NS10?
They are both very sensitive about Disortion and Dessering. They are both very sensitive if the music is over-compressed.
I listen both Limibizkit and Linkinpark on HS80M; they both sounded kinda over-compressed and lack of attack.
The best album that sound good in HS80M is...U2...unbelieveable huh? i guess that has to do with how they did less loudness compression compare to the first 2.
On the other hand, Genelec always "insert" more dynamic range for your music and cause you think u still have a lot of headroom.
However, I am running HS80M, Genelec 1030a and ADAM S2A. And, i always have to scan my final works through each one of them to make sure there is no problem. Simply any set of speakers have cons and pros. I believe as a professional mixing engineer you won't want to put all your egges in one basket. You might have a "favour", but you can't let the favour foolish your rational.