The issue is less with the reviews themselves but with the fact that they bring down the average score which, even if it is only a few tenths of a %, can move the restaurant down the rankings and may put it outside the "top ten" lists that Tripadvisor generates.
It's a restaurant in Littlehampton (just).
To move down the rankings it'll have to drop below Wimpey, that'll take more than a few tenths of a %.