I did read the wiki before doing anything and no I didn't discuss anything, maybe I should have.

If you look at https://wiki.openstreetmap.org/wiki/Tag:junction%3Droundabout#Signal-controlled_roundabouts it specifically states that signal controlled roundabouts it is suggested that the roundabout tags is retained.  At least one junction I did change doesn't have all sections signalled controlled so that one should definitely still be tagged a a roundabout.

In the UK everyone will call signal controlled roundabouts roundabouts.

None of the junctions has anything stated here: https://wiki.openstreetmap.org/wiki/Tag:junction%3Dcircular#Distinguishing_from_roundabouts which definitely makes them not roundabouts.

I only changed junctions in the area I live that I have used and know about.