It’s controversial because it’s plainly not true. Unless you think a world with social distancing and a deadly virus with no immunity is being back to normality, which would be a bit weird to think in my opinion. Whitty has already said we need to have social distancing in place until the end of the year at the very earliest, so realistically a fair way into 2021. “Back to normal” can’t exist until social distancing is not a thing and until we’ve been vaccinated or attained herd immunity. There can be a ‘new’ normal but you are talking about going “back” to normality, ie our old normal. Which won’t be this year never mind this July.