They definitely have Tessa to thank for their rise to fame. When she was doing pretty much daily lives, there were people who were basically just there for Tessa content. Then when Alba was born that also massively carried them.Did anyone see Tessa's live? I missed it.
Sounds like she was part of their hype/rise to fame.
If it was just the twins alone there is no way they would have had any where near the level of social media engagement that got them where they are now