The truth is we don't have long term data on many of the sugar substitutes.
That being said, the consensus that they are healthy is a poor attempt at making us feel better about what we’re doing.
Using them daily in small doses probably isn't good or bad for you. But most people don't do this thing called moderation.
When you pack your diet full of sugar substitutes you’re not really changing the thing that got you there in the first place.