Thye achieved what they want to achieve, they have 47,000 ranks in Alexa, total members is 107012 and they are still paying in real-time, I think they have a long term plan for this forum, they will not spend a huge amount of money just to neglect its development, but I don't think they can surpass Bitcointalk in terms of topics and great posters.
Sure, their rank skyrocketed due to their huge campaign. But since the campaign stopped, expect their growth to slow down and stagnate. Their growth was pretty much mostly direct clicks from Bitcointalk, and now they don't have that, it's going to be tougher; in contrast to Bitcointalk whereas this forum has quite good SEO, with a good number of bitcoin and crypto related search queries that ranks high on Google.