Possibly, but the key point is that Reform is ultimately Farage's baby. While Carswell was less prominent than Braverman or Jenrick, he was more of a policy wonk, and in a contest, lost heavily - which is why he's over in Mississippi rather than front line British politics.Carswell was a relatively minor person in terms of influence and UKIP. Jenrick and Braverman, ahead of other notable Tory defections, have the potential to do a lot of damage to Farage in a bust-up with him. Also, the infighting doesn't have to involve Farage to damage him; Jenrick and Braverman could easily fight each other over their position in the party if one thinks they deserve the other's position, and/or lesser-former Tories feel they are worthy of a higher role and throw a hissy fit over not getting it.
Given the allegations of sexual assault against Andrew Rosindell, I can also see Reform being vulnerable on that front if they try to play the "protect our women" card.