So, in this scenario older members with a lot of merits would bump old topics from now-defunct or not interesting coins purely out of spite for shitcoins (yeah I call them shitcoins, not altcoins or tokens) so that no new project will be able to make it to the first or even second page, thus sabotaging the entire board?
It is possible and it could create mess. Imagine, first 4-5 pages filled with old dead threads.Solution for this could be to not allow "old bumps", for example, making bump button unavailable for threads which are older than X months/years and/or no one posted anything in last X months/years.
Now at the time writing a random topic which has posted in 2014 and has not received any reply is on the second place. I think one of high-merit users has bumped that only for testing.
I am going to report you to your signature manager right now 