If you're not buying it because of the case where they're scared to label something which is vegan as such, then you're part of the problem and you're hurting veganism.

What matters is reducing climate impact, reducing animal cruelty, and the health benefits. What doesn't matter is your feelings about labels. By boycotting such products, you're reducing their market, potentially causing them to drop their plant based offering, and making it more difficult for people to eat vegan. That, in turn, reduces the number of vegans and hurts everybody.