100%, and quite frankly people that haven't watched it shouldn't be voting, because I too ~hated~ the US format for years having never seen a single second of it
I actually think it's more 'Big Brother' and it's more reality too, because under the UK format you are having outside influence which often affects the way the housemates are behaving, people play up to the cameras and try and get the public on side (often by being inoffensive dullards because that's what it takes to do well), whereas under the US format they are left to their devices and things play out naturally. Plus, I think it's far more reasonable and fair that you are evicted through your own fault that you didn't play well enough than simply the public didn't like you (often through virtue of actually appearing in episodes, or worse, your gender and/or ethnicity).
It's far more interesting, the series cannot be ruined by the voting public who most of the time don't have a clue what they're doing, and if your favourite goes it's easier to take because by and large it's through their own doing. Plus, BBUK is in a dire state format wise and people are always calling for it to be freshened up, so here's the opportunity.
Ideally I'd take the full BBUS format but I realise the public couldn't be completely alienated so there are ways they could do a hybrid of the two that would still give them some involvement (although importantly IMO, not the direct control over who leaves) and generate some revenue at the same time.
Some say people would 'switch off' yet the viewership is already at an all time low and we're entering last attempt territory now so why not give it a try? The only reason people are averse to non-public vote formats in the UK is because we don't have enough of them, as with everything the more coverage they get the more likely it is people will warm to them. Plus, I wouldn't be averse to certain sections of the BBUK viewers leaving the show for good anyway, so...