Usually when items are stated as not suitable for Induction it is because they might interfere with your weight loss or maybe even take you out of ketosis.
The Atkins bars are yummy but they stall some people - myself included. Technically Atkins say you can have two products a day, no more, but many people who use two bars a day, or a bar and a shake, say, end up STS or seeing a very small loss that week.
If, however, your losses are not affected and you don't suddenly find food cravings coming back then I can't see a problem. Atkins never used to be what some americans now call 'a candy bar company'. The idea of Atkins years back was to clear junk out of the system and eat good clean healthy food. Food technology nowadays means they can produce high quality meal replacement bars that fit low carbing requirements but they contain polyols - sugar alcohols - which affect some people similarly to sugar.
I used to eat a lot of the meal replacement bars (Advantage) but have cut back. The Endulge bars are not meal replacements they are just 'candy bars' lol. Use sparingly, I would say, and keep an eye on how they affect you day to day.