
Some people regard Salafism or Salafiyyah as a new maddhab
I agree with you ... as the word (Salaf) in Arabic simply means the past ....

This is what all the maddhabs do, and so they all follow the methodology of Salafiyyah
That is again true .....

it is simply adhering to what the Prophet (sallallaahu alayhi wasallam) and his Companions and those who followed them were upon.
That is where the disagreement between the Islamic theologies emerge ,
1- How trustworthy the traditions? The shia sect (due to the known political problem of Imamah) not only they radically mistrust the sunni hadith collections ,but also forged traditions that support their political position...
2- How far the traditions (sunna.. etc) be helpful in fiqh ,is where both the school of Abu Hanifah and Ibn Hanbal (God bless their souls both) differs (I think the later exaggerated its significance) ...
3- should we accept beliefs with certainity that included in Hadith Ahad or it has to be Hadith Mutawatir? ,what if Hadith Ahad contradicts the Quran? a controversy that led to theological differences .
4- could we question the understanding of Salaf (the early generation after the prophet) in some points, or if we do so ,we make bad innovations? could we simply, rely all the way on the interpretations of texts provided by medieval clerics, or we need to use reason to keep up with changing times.
I'm not posing those question seeking answers ,just to elborate the point
Regarding Muhammad bin Abdul Wahhab - we have to be aware that there are many lies and fabrications in circulation about him..
That is true , but that is the way with the reformers ,some would praise them ,others would criticise .....
but you know, the focus of criticism on the Salafia ,wahabia movement (be sure I'm using the term with good intention),is not on the its founder (may Allah bless his soul),but on the actions of the movements itself all over the years .....

At the end of the day, as long as we follow the Qur'an and the Sunnah
as understood by the Companions and early Muslims, that is the main thing.
Though I don't think the part in bold has to be accepted strictly ,yet I respect and appriciate those who held it ,who put the understanding of the early muslims all the way above criticism ..... me personally I think some later understandings ,I won't say better but at least possible ...
away from the methodology ,I don't think the movement was civilized,ambitious, realistic ,tolerant as it should be......
I pray for Allah that they reform the movement in a way to be suitable for the serious challenges that face our Islamic nation....
They have the financial abilities to build a united,civilized,tolerant and powerful nation that is feared and respected by the other nations ,but they lack the open minded leadership ...
Thank you Bro Muhammad for your input .... and I'm pleased ,we for the first time, have a discussion...
peace