Please be aware of Lemmy, the ActivityPub-compatible Reddit clone. It's in a quite far stadium of functionality, but I'm sure extra development on their moderation systems would be more than welcome!
I actually had a curious experience with this personally.
About 2 or 3 years ago I started using DuckDuckGo on all my devices as the default search engine. And DDG has this feature where if your results aren't very good, you can add "g!" at the end of the query to be redirected to Google.
So initially, 2 or 3 years ago, I'd regularly use this feature and get better results. But over the years I came to realize that often then Google results were no better and even sometimes worse than the DDG results.
Still, for some things like longer quotes (error msgs) out of obscure forum pages or queries that are questions, Google does better, but almost everything else, DDG is at least just as good.
This paper is entirely based on a false assumption:
> We also assume that miners always have space to include all available transactions.
And that's exactly what the block size debate was about 2 years ago (paper is 4 years old). We did realize that it was crucial for Bitcoin to always have demand for block space, exactly for this reason.
If the authors want to contribute to the space, they should revisit that assumption and try again.
Also, the paper has a clear motive:
> Perhaps instead, designers of new cryptocurrencies must resign themselves to the inevitability of monetary inflation and make the block reward permanent.
Instead of suggesting changes that could be made to Bitcoin to reduce the thread of the scenario they describe, they suggest to discard Bitcoin altogether and move to a cryptocurrency with permanent inflation.