Well, in Islamic history they used to call other names, that sheikh that that sheikh this. Second if one person have done something bad or lead that bad thing, we should call him as what it is.read fathul majeed sharax kitaab at tawheed which was written by sheikh abdul wahhab
it is the basis for the understanding of tawheed and the different forms of takfir i recommend it 100% it will strengthen your understanding.
@Ebuo the scholars are human if theyve made mistakes we reject that and we take what they have done as right. to insult the shoyookh is a major sin in islam.