No, BTC price dropping just makes spammers less active, but what makes them really desperate is the Merit system.
If there is no Merit system, the spammers will once again occupy the forum when the market improves.
To be honest, I see no dramatic changes after the introduction of the merit system.
My opinion is that, on the contrary, spam has become even more and now it has spread not just to posts but to create topics.
In such a stripped as - Bitcoin Discussion, Alternate cryptocurrencies, absolutely can not find a normal topic.