When companies start to focus too much on growth usually they start to lose sight of their values and greed begins to take over. That said I just checked their ad policy and while they do physical ads, it's still a pretty reasonable policy.
They still won't be showing up on random YouTubers videos like Nord
They've actually ran adverts at the border of sweden telling politicians and alike that were going there to vote on IIRC ChatControl to vote against it
Mullvad is probably the best example of using ads for something good