This is about as ludicrous as it gets, IMHO.
I know moderating a forum isn't easy (I'm a moderator on Endless Sphere, which is many times bigger and busier than this forum) but banning members because, it seems, they have been quite rightly critical of false advertising (which is how this appears to those reading this forum) seems to be just plain wrong.
I know that commercial websites need to tread a fine line between allowing free comment and keeping their commercial sponsors happy, but this forum had established a reputation as a place where the pros and cons of particular ebikes could be discussed freely.
It seems to me that a line has now been crossed, where pointing out apparently false claims made by a sponsor is likely to be suppressed, so significantly diluting the usefulness of this forum as a place for people to get relatively unbiased advice and opinion.
This can only be detrimental to the overall promotion of electric bike use in the UK, IMHO.
Personally I'd like to see better moderation of some of the stuff one or two vendors post here, as there is a fair bit of misinformation scattered around from some of them.