If this theory is true and seems plausible, wouldn't that make any previous calculations to very distant objects invalid? ie. "standard candles" are no longer

If this theory is true and seems plausible, wouldn't that make any previous calculations to very distant objects invalid? ie. "standard candles" are no longer consistent? adding link to actual paper: https://academic.oup.com/mnrasl/article/537/1/L55/7926647 https://academic.oup.com/mnrasl/article/537/1/L55/7926647