I hate to break it to you but every single member of the teachers' unions are, in fact, teachers
But not all teachers hold the same views on things, which is something that tends to get lost when unions act as our collective mouthpiece and you get views such as ‘teachers think X’ when actually they mean the teachers who are a) in their union b) responded and c) shared the view of X.
In reality, there is a lot of variation amongst teachers on subjects like discipline, setting, exams and so on, and teachers don’t have a collective view re lockdowns and what constitutes ‘safe.’ Certainly I remember frustration being expressed about masks, face shields, having to move around the school while kids stayed in the same rooms, from when I was teaching in the autumn 2020 period. However, if you look on Twitter or on here, those views seemed to be a minority.
Even the recent strikes haven’t caused all that much notable disruption, in England at any rate - not sure about Scotland.
There isn’t a collectively held view by teachers any more than all mothers or all journalists hold the same view.