That's pretty much the reason why they changed it, assuming you're talking about the Nook's Cranny board. It also used to be 4hrs per bump, but due to how much activity there was on the board they changed it to 2 hrs instead. Sure, it didn't completely solve the issue of threads being pushed off into oblivion, but it at least made it a little easier to have them stay on the first few pages for a bit longer.
Even then, popular threads will always push out the new ones since each new post by another person is essentially a free bump reset. I know how struggling sales or purchases feels like, but there's not much we can do about it ourselves. I hope that your trading experience elsewhere has been pleasant though.